- The six main muscle groups you want to train are the chest, back, arms, shoulders, legs, and calves.
You want to train each of these muscle groups at least once every 5-7 days for maximum muscle gain.
Read on to find out which muscle groups you should train together and the best exercises for each muscle group.
Deciding which muscle groups to train together can be confusing.
Most people say that the chest and triceps should be trained together, as they are both involved in bench pressing and overload.
Others say that you should train biceps with your chest because your arms will still be fresh after the feast, so you could also train them together.
Arnold was known to train his chest and get back together, and if that was good enough for The Oak, then it should probably work for you, right?
Other people still say that you shouldn’t schedule your workouts around individual muscle groups at all, but simply focus on doing a lot of heavy squats, deadlifts, and pressing the bench, or full-body training.
So how are you supposed to put all of this into an effective training plan that you enjoy?
Well, I have good news for you:
There is no “best” way to combine muscle groups in your training. As long as you understand a few basic principles, there are many ways to combine them into workouts that not only work, but that you enjoy and can stick to.
Body part “bro” splits, push pull legs, and upper / lower routines can work just as well, and which one you actually use depends on how many times per week you want to train, how many years you have been training, and which muscle groups you want to work on the majority.
And we will break everything down in this article.
In the end, you will know which muscle groups to train together and why, the best exercises for each, and how to create a training routine that guarantees results.
The 6 Main Muscle Groups
A “muscle group” is exactly what it sounds like: a group of muscles located closely together in your body that perform similar movements.
When it comes to building muscle, the top six muscle groups to pay attention to are:
Categorizing muscles into units like this helps us better organize and prioritize our training.
If you want to build a bigger upper body, for example, it doesn’t make sense to train your lower body as often. However, that is exactly what you will get if you follow a lot of full body workout plans or weight lifting routines.
Read: The Ultimate Guide to Full Body Workout Routines
That can work well if you’re only training two or three times a week, but increasing your training frequency can quickly end up overtrained or injured.
On the other hand, many people focus too much on trying to isolate individual muscles like the biceps.
Each exercise uses a variety of surrounding muscles, so there is little point in trying to grow just one muscle. Rather, you should look at them as muscle units or groups.
What’s more, this unique approach to training a muscle often results in muscle imbalances where certain muscles are disproportionately larger than others. This is visually unappealing and can set you up for an increased risk of injury.
Instead, you want to train all six of your major muscle groups for a symmetrical, healthy, and “aesthetic” physique.
The main muscle groups you want to train are the. . .
Some people become even more granular and divide the body into smaller muscle groups like that. . .
- Top fish
Front, side and rear delts
. . . but this level of precision is not necessary.
As long as you train the six major muscle groups mentioned above, all of these minor muscle groups will develop well too.
However, figuring out how to train the six major muscle groups in your training program is not easy. You have to thread the needle between the training of each muscle group enough to continue to gain muscle and strength, without developing muscle imbalances or injury.
That’s why I put together 12 weeks of free training schedule to optimally train all six major muscle groups. This program incorporates all the scientific principles that you will learn in this article, and has helped thousands of men and women just like you build a body they are proud of.
All you have to do to gain access to these training plans is to enter your email address in the form below.
Major Muscle Group #1: Chest
The main muscle of the chest is the pectoralis major, or “pec” major.
Here’s what it looks like:
The main function of the chest muscle is to bring the upper arm through the body.
Unlike most other muscles, however, the fibers of the chest muscle are not all aligned in the same direction.
As you can see, the pec major has multiple “heads” or places where the muscle fibers attach to the skeleton.
There is a sternocostal head, which connects the sternum and rib cage to the upper arm, and a clavicular head, which connects the clavicle to the upper arm.
Why is this important?
Well, how a muscle attaches itself to the surrounding skeleton changes the way you should train it.
Exercises that involve pushing the arms in front of the chest, such as the flat and decline bench press, emphasize the larger sternocostal head of the pecs.
Exercises that involve moving the arms up and away from the chest, such as the incline bench press and reverse grip, emphasize the smaller clavicular head.
Read: How To Create The Ultimate Upper Chest Workout
So, if you want to develop a full, proportioned, and well-defined chest, you want to focus on chest exercises like these:
Flat Bar Bench Press
Incline Bar Bench Press
Flat Dumbbell Bench Press
Incline Dumbbell Bench Press
Close-grip bench press
Reverse Grip Bench Press
Summary: The chest muscle is made up of two sections, or “heads,” the sternocostal and clavicular heads, and you should use exercises targeting both heads to maximize muscle growth.
(The erector spinae aren’t shown on the above chart, but they are the lower back muscles that occupy the gray area at the bottom.)
There are a few smaller bundles of muscle that matter as well, such as the teres major and minor, and the infraspinatus. You can see them here:
While this muscle is not as prominent as the biceps brachii, it does play an important role in the overall appearance of your arms.
When well developed, the brachialis looks like a “knot” between the biceps brachii and the triceps, and it greatly affects the overall appearance of the arms.
First, it separates the biceps and triceps cleanly when flexing, which shows each better.
Second, it pushes the biceps brachii up, giving it a better “peak” when flexing.
Here is an image that I think illustrates my point:
Another muscle you need to know about is the biceps brachialis, which lies beneath the biceps brachii and assists it in flexing at the elbow.
Here’s how it looks:
While this muscle isn’t nearly as prominent as the biceps brachii, it plays an important role in the overall appearance of your arms.
When well developed, the brachialis looks like a “knot” in between the biceps brachii and triceps, and it noticeably impacts the overall appearance of the arms.
First, it cleanly separates the biceps and triceps when flexed, which better showcases each.
Second, it pushes the biceps brachii up, giving you a better “peak” when flexing.
Here’s a picture that I think illustrates my point:
The biceps’ job is to flex the arm, or bring your forearm closer to your upper arm. They also supinate the elbow, which means turning your hand upward as if you were about to catch something.
To maximally stimulate the biceps, you typically want to keep your hands turned palm-up toward the ceiling.
The triceps, or triceps brachii, do the opposite job of the biceps, pushing your forearm away from your upper arm.
This is what they look like:
As you can see, the three heads combine to form the distinctive “horseshoe” that can become quite pronounced, when properly developed.
Here’s a shot of Mike, showing what this looks like:
When most people think of arm muscles, they think of the biceps.
Big biceps = big arms . . . right?
Ironically, the biceps contribute substantially less to overall arm size than the triceps, which are a much larger muscle group.
You can see this clearly in a shot like this:
Small triceps mean small, disproportionate arms, regardless of the size of the biceps.
Last but not least are the forearms, which are comprised of several small muscles:
Forearms are like the calves of the arms.
They aren’t the immediate focus, but if they’re underdeveloped, it’s sorely obvious. If they’re well developed, however, it greatly enhances the whole appearance of the limbs.
You’ll want to train all of these muscles to develop a set of standout arms.
Luckily, most arm exercises (and heavy barbell exercises in general) also train the forearms.
So, if you want to develop strong, muscular, proportionate biceps, triceps, and forearms, you want to focus on arm exercises like these . . .
- Barbell curl
- Dumbbell curl
- EZ-bar curl
- Skull crusher
- Triceps pressdown (with rope or metal handle)
- Triceps overhead press (with cable or dumbbell)
- Close-grip bench press
(As you can see, there’s a certain degree of overlap between exercises for different muscle groups. For example, most back exercises also train the biceps, and most chest exercises also train the triceps and forearms).
Summary: The arms are made up of the biceps, triceps, forearm muscles, and a few other small muscles. You should include some direct training for the biceps and triceps, but you generally don’t need to train the forearms directly.
Muscle Group #4: Shoulders
Your shoulders are comprised of three major muscles known as deltoids, and here’s how they look:
The three heads of the deltoids are the:
- Anterior head (front)
- Lateral head (middle)
- Posterior head (rear)
The delts mainly work to stabilize nearby muscle groups like the pecs, lats, and biceps.
The rear delts help the lats and traps bring the arm behind you, the front delts help the pecs bring your arms in front of you, and your lateral delts help the traps, pecs, and other muscles around your neck and upper back raise your arm to the side.
This is important, because the angle at which you press or pull will change how much the delts are trained relative to other muscles. For example, an overhead press will use more lateral delt than upper chest, and a barbell row will use more rear delt than a lat pulldown.
It’s very important to develop all three heads of this muscle because if one is lagging, it will be painfully obvious.
In most cases, the lateral and posterior deltoids need the most work because the anterior deltoids do get trained to some degree in a good chest workout, and nobody skips chest day.
Chest training doesn’t adequately train the other two deltoid heads though, which is why it’s best to include some additional exercises that also train your lateral and posterior delts.
If you want to develop all three heads of your deltoids, you want to focus on shoulder exercises like these . . .
- Dumbbell side delt raises
- Dumbbell rear delt raises
- Barbell rows
- Dumbbell rows
- Military press
- Flat bench press
- Incline bench press
Summary: The shoulders are made up of the anterior, lateral, and posterior heads, and it’s important you include exercises in your program that train all three heads to achieve a balanced, proportionate look.
Muscle Group #5: Legs
The upper portion of the legs are made up of several major muscle groups:
- The quadriceps
- The hamstrings
- The glutes
Technically, the calves are also part of the legs, but since they require a very different style of training we’ll address those separately.
Each of these muscle groups are best trained by different exercises, and each has “special needs” if you’re going to achieve maximal development and definition.
There are quite a few different leg muscles, so let’s take a moment to discuss them separately.
The quadriceps are a set of four large muscles on the front of your legs:
- The vastus lateralis
- The vastus medialis
- The vastus intermedius
- The rectus femoris
(Interestingly, new research indicates there’s a fifth muscle involved, so maybe we should be talking about the quintraceps instead?)
Here’s how they look:
The quadriceps muscles work together to extend the knees and flex the hips.
Thus, quadriceps exercises bring the hip from an extended to a flexed position (bending the joint) and bring the knee from a flexed to an extended position (straightening the joint).
When the quads are well developed, they form the centerpiece of the legs.
Case in point:
Now, many people believe that you can get all of the quad development you need from lots of heavy back squatting.
The back squat is a fantastic exercise for your quads (and entire lower body), but for optimal quad development, you should periodically do others as well, including front squats and lunges.
As you’ll see, the best quads exercises that you can do are mostly compound exercises, and mostly involve using free weights.
If you want to maximally develop your quads, you want to focus on exercises like the . . .
- Barbell back squat
- Barbell front squat
- Dumbbell lunge
- Leg press
- Bulgarian split squat
The hamstrings are a group of three muscles on the back of your legs:
- Biceps femoris
Here’s how they look:
The hamstrings work together to flex the knee, as when you’re doing a hamstring curl, and extend the hips during exercises like the hip thrust and deadlift.
The biceps femoris is also split into two “heads” or sections, just like the biceps in your arm.
Unlike the biceps, however, the hamstrings tend to be one of the most neglected muscles of the lower body.
The quads get most of the attention because they’re larger and more visible, and this can create a muscular imbalance between the front and back of the thighs that looks strange and may increase the risk of injury.
Many people also think that squatting is all you need for your hamstrings, and this is mistaken.
While the squat does involve the hamstrings, the quads do the lion’s share of the work. And this is especially true with the type of squatting that you often see in the gym (quarter- and half-repping).
So, a good rule of thumb is to always include exercises that target your hamstrings in your lower body workouts, in addition to your quad-dominant exercises.
If you want to maximally develop your hamstrings, you want to focus on exercises like the . . .
- Barbell deadlift
- Sumo deadlift
- Romanian deadlift
- Hamstring curl machine
- Barbell good-morning
- Glute-ham raise machine
The gluteus muscles, or “glutes,” are comprised of three muscles that form your butt:
- The gluteus maximus
- The gluteus minimus
- The gluteus medius
Here’s how they look:
They’re for more than just show, too.
Together, they play a key role in stabilizing your body during all kinds of movement, and generating force in exercises like the deadlift and squat.
Now, if you’re training your lower body correctly, you don’t have to do additional training for your glutes.
That said, if you feel your glutes are a weak point in your physique, or if you just want maximum booty, then you’ll want to include exercises that specifically target them.
Read: The 7 Best Butt Exercises That Will Give You Glorious Glutes
If you want to maximally develop your glutes, you want to focus on exercises like the . . .
- Barbell deadlift
- Sumo deadlift
- Romanian deadlift
- Glute-ham raise machine
- Barbell hip thrust
- Dumbbell lunge
- Barbell squat
Summary: The upper portion of the legs are made up of the quadriceps, hamstrings, and glutes, and you want to include exercises that train each of these muscle groups in your workout routine to maximize your leg size and definition.
Muscle Group #6: The Calves
The calves are made up of two powerful muscles:
- The gastrocnemius
- The soleus
The gastrocnemius is the large (or not so much) muscle you see when you look at your calf. The soleus is a deep muscle that lies underneath the gastrocnemius.
Here’s how they look:
These two muscles work together to manipulate the foot and ankle joint and are involved in knee flexion as well.
When it comes to looks, we’re most concerned with the gastrocnemius, but a properly developed soleus is critical as well because it supports the larger gastroc both in function and visual size.
Due to the way the calf muscles are oriented, it’s best to use different exercises to train each.
There are really only two types of exercises that you can do to effectively train your calves.
1. Calf pressing
If you’re pressing your toes against resistance, it’s a calf press.
2. Calf raising
If you’re using your calves to raise and lower your body against gravity, it’s a calf raise.
And those break down into seated and standing variations.
Standing calf presses and raises are done with the legs straight and emphasize the gastrocnemius.
Seated calf raises are done, well, seated and with the legs bent, which emphasizes the soleus.
It’s important to do both standing and seated calf work and to emphasize your standing exercises if you want to get the most out of your calf workouts.
The reason for doing both is making sure that your soleus isn’t neglected and the reason for doing more standing than seated work is you want to focus most of your effort on training your gastrocnemius.
There aren’t that many worthwhile calf exercise variations you can do, but here are the ones you want to focus on . . .
- Standing calf raise machine
- Standing barbell calf raise
- Seated calf raise machine
- Donkey calf raise machine
- Single-leg bodyweight calf raise
Summary: The calves are made up of the gastrocnemius and soleus, and you want to do a combination of both standing and seated calf exercises to train both muscles.
What About the Core?
The “core,” or the group of muscles around your midsection, is often counted as the seventh major muscle group.
It’s made up of the rectus abdominis, transverse abdominis, and the internal and external obliques. These muscles all stabilize the spine and help with spinal flexion, bringing your chest closer to your hips.
For the sake of completeness, you could call the “core” a muscle group. In the context of building a workout plan, though, that’s not typically necessary.
This is because if you’re training the other six major muscle groups with heavy compound exercises, your core is getting enough indirect training that you don’t really need a separate workout just for your core.
This doesn’t mean that direct core training is useless, however.
Ab and core exercises aren’t required to get a six-pack, but they can improve your abdominal definition. That’s why you’ll find a little ab training tacked onto the end of some of your other workouts in the plans below.
That brings us to the next question—how are you supposed to pair these muscle groups together?
The Best Muscle Groups to Workout Together
When it comes to deciding which muscle groups to train on the same day and in the same workout, it really comes down to how quickly you can recover from your workouts.
Depending on your sleep, diet, and training, it generally takes about 72 to 96 hours for your muscles to fully recover after a workout.
Research has shown that even in resistance-trained, college-aged men, full muscle recovery can take anywhere from 48 to 96 hours.
This is in line with one of the most thorough reviews to date, which shows that training each muscle group every 5 to 7 days tends to be the sweet spot for building muscle.
That said, just because a muscle isn’t completely recovered doesn’t mean you can’t benefit from training it again.
For example, the latest research shows that training a muscle group closer to twice per week is likely optimal for muscle and strength gain. What’s more, other studies show that as you inch toward your genetic potential for muscle growth, you may benefit from training each muscle group more often than this.
Read: The Definitive Guide to Full-Body Workout Routines
This kind of high-frequency training can be an issue if you’re doing a lot of heavy, compound barbell exercises, though.
You see, most compound barbell exercises hit more than one muscle group.
For example, when you bench press, your chest is the prime mover, but your triceps and shoulders also pitch in.
When you deadlift, you may be focused on growing your back, but your hamstrings and glutes also take a beating.
In other words, most of the best exercises train more than one muscle group at a time.
That’s one of the reasons heavy, compound barbell training is so effective.
It’s also why it’s easy to overtrain if you do too much full-body barbell training.
That’s why the following 5-day workout routine ensures you get around 80% of your weekly sets from heavy, compound weightlifting. The remaining 20% of your weekly sets are from isolation exercises that train particular muscle groups without causing the same fatigue you’d get from heavy, compound exercises.
In other words, this workout routine strikes a good balance between adequately training each muscle group and providing enough recovery so you can keep progressing.
Summary: You generally want to train each major muscle group twice per week to maximize strength and muscle gain.
The Legion 5-Day Workout Routine
Pull & Calves
Upper Body & Core
Upper Body & Core
This is one of the best all the workout schedules for maximizing muscle growth and strength.
Each workout takes about 45 minutes, each muscle group gets maximal stimulation, your muscles and joints get enough time to recover, and it fits perfectly with most people’s schedules (Monday through Friday with the weekends off).
The 5-day routine also gives you room to add some extra sets for your weak points.
For instance, many guys complain about lack of chest development and thus can add 3 sets of incline pressing to day 4, which can be done before the shoulder training.
Many women are focused on improving their butt and legs and thus can add 3 sets of squats to day 2, done after deadlifts, and 3 sets of hip thrusts to day 5, done after legs.
If you don’t want to train five days per week, you have a few more options to make sure each muscle group gets the attention it deserves.
The Legion 4-Day Workout Routine
Push & Core
Pull & Calves
Upper Body & Core
If you aren’t ready to commit to four days per week, you can still train each muscle group in this three-day per week routine . . .
The 3-Day Workout Routine
Push & Core
Pull & Calves
This workout routine is almost identical to a traditional push/pull/legs routine, except with a bit more isolation work to bring up stubborn muscle groups like the shoulders.
If you’d like to give these routines a whirl, just enter your email address in the form below and I’ll send you 12-weeks’ worth of workout programming, including exactly what exercises to do and how many reps and sets you should do for each exercise.
Now that you know what muscle groups to train together, let’s look at what exercises you should use to train them.
The Best Exercises for Each Muscle Group
There are two primary types of weightlifting exercises: compound exercises and isolation exercises.
Compound exercises involve multiple major muscle groups and require the most whole-body strength and effort. Examples of compound exercises are the squat, deadlift, bench press, and military press.
Isolation exercises involve one muscle group and require significantly less whole-body strength and effort. Examples of isolation exercises are the biceps curl, cable flye, and side lateral raise.
If you want to build maximum muscle and strength, you want to focus on compound exercises in your workouts for two reasons:
- You train more muscle groups with each rep, making your workouts more efficient.
- You can use more weight, which means you can expose your muscles to greater levels of mechanical tension (the key driver of muscle growth).
Isolation exercises can and should be used to develop smaller, stubborn muscles like the shoulders and arms and support the growth of larger muscle groups, but they should never be the focus of a workout routine for natural weightlifters.
Just knowing that isn’t enough to build an effective workout routine, though, because there are quite a few compound exercises you could do for each muscle group.
Which specific exercises are the best for building each muscle group? Here’s a handy list taken from two of Mike’s books, Bigger Leaner Stronger and Thinner Leaner Stronger . . .
The Best Chest Exercises
- Incline Barbell Bench Press
- Incline Dumbbell Bench Press
- Flat Barbell Bench Press
- Flat Dumbbell Bench Press
- Dip (Chest Variation)
These are the exercises you must master if you want to build an impressive chest. Period.
Forget cable work, dumbbell flyes, push-up variations, machines, and every other type of chest exercise out there for now.
They just aren’t nearly as effective as the above core, foundation-building lifts and are only for intermediate and advanced weightlifters who have already paid their dues with the heavy pressing to build big, strong pecs.
The Best Back Exercises
- Barbell Deadlift
- Barbell Row
- One-Arm Dumbbell Row
- Lat Pulldown (Front and Close-Grip)
- T-Bar Row
- Seated Cable Row (Wide- and Close-Grip)
- Barbell Shrug
The deadlift is, by far, the most effective back exercise you can do. You just can’t beat it for all-around development and strength, and that’s why I recommend you do it every week.
When combined with a small selection of other pulling exercises like the lat pulldown, one-arm dumbbell row, and cable row, you have a winning combination for building an impressive back.
Next up we have everyone’s favorite—arm exercises. You’ll want to include exercises for both your biceps and triceps for maximum arm development.
The Best Biceps Exercises
- Barbell Curl
- E-Z Bar Curl
- Dumbbell Curl
- Hammer Curl
Short and sweet. This is all you need to build big biceps.
The Best Triceps Exercises
- Close-Grip Bench Press
- Seated Triceps Press
- Dip (Triceps Variation)
- Lying Triceps Extension (“Skullcrusher”)
- Triceps Pushdown
Like with biceps, you just don’t need much variety in your choices of triceps exercises to get those “horseshoe” tris.
The Best Shoulder Exercises
- Seated Barbell Military Press or Standing Barbell Military Press
- Seated Dumbbell Press or Arnold Dumbbell Press
- Dumbbell Side Lateral Raise or One-Arm Dumbbell Side Lateral Raise
- Rear Delt Raise (Bent-Over or Seated)
- Face Pull
- Barbell Rear Delt Row
- Dumbbell Front Raise
As you can see, I’m a fan of pressing. As with the chest, you just can’t beat heavy pressing for developing your shoulders. And as a natural weightlifter, you’re going to need as much help as you can get in this department.
If all you do is press, however, you’ll find that your middle and rear heads of your deltoids fall behind in development. This is why a good shoulder workout trains all three heads of the muscle by having you press as well as do side raises and something for the rear delts.
Just like any other muscle group, the shoulders can benefit from higher-rep work, but you have to emphasize the heavy weightlifting if you want them to grow.
The Best Leg Exercises
- Barbell Squat
- Front Squat
- Hack Squat (sled, not barbell)
- Single Leg Split Squat (Barbell or Dumbbell)
- Leg Press
- Barbell Lunge (Walking or In Place)
- Dumbbell Lunge
- Romanian Deadlift
- Leg Curl (Lying or Seated)
Working legs is very simple. Rule #1: Always do squats. Rule #2: Always do squats. Rule #3: You get the point.
The bottom line is that every leg workout should begin with either the back or front squat (or some squat variation).
The Best Calf Exercises
- Standing Calf Raise
- Seated Calf Raise
- Calf Press on the Leg Press
- Donkey Calf Raise
The calves respond particularly well to a combination of low- and high-rep training. This is probably because the composition of the muscle fibers of the calf muscles can vary significantly from person to person.
Read: What 30 Studies Say About Your Muscle Fiber Type and Muscle Growth
Even if you were dealt a bad hand when it comes to calf genetics, they will grow if you give them enough volume and effort.
The Best Ab Exercises
- Cable Crunch
- Captain’s Chair Leg Raise
- Hanging Leg Raise
- Air Bicycle
- Ab Wheel Rollout
Although you don’t need to directly train your abs if you’re happy with your ab development, it’s worth using a handful of the right ab exercises to develop your core if you feel it’s lacking.
If you want to learn more about the best ab workouts, check out this article:
Read: The Ultimate Ab Workouts: The 5 Best Ab Exercises for Getting a Six Pack
How to Correct Muscle Group Imbalances
After your first few months of lifting weights, you’ll quickly realize certain parts of your body respond faster to strength training than others.
For example, my legs, calves, and butt grew quickly after I started lifting weights, my chest, triceps, and shoulders grew slower but consistently, and my biceps, chest, and back have taken their sweet time to catch up to the rest of my muscle groups.
In many cases, muscle imbalances like these will simply work themselves out over time as you get more training experience. If they don’t, though, or you don’t want to wait to find out, it’s worth doing more volume (sets or reps) for your lagging muscle groups and less for your stronger muscle groups.
If you want to learn how to program your workouts to bring up your weak points and maintain your strong points, check out this article:
The Easy Way to Find and Fix Muscle Imbalances
The Bottom Line on Muscle Groups
There are countless theories on which muscle groups you should train on the same day.
The answer, though, really boils down to a few simple principles:
- Train each muscle group every 5-7 days to allow for sufficient recovery.
- Use the correct exercises for training each muscle group.
- Combine muscle groups that perform similar movements (like chest and triceps).
The most tried-and-true workout routine for accomplishing all of those goals, is this:
Day 1: Push (Chest)
Day 2: Pull & Calves (Back)
Day 3: Upper Body (Shoulders, Arms)
Day 4: Legs
Day 5: Upper Body (Chest, Arms)
If you don’t want to train five days per week, you can make this work as a 3- or 4-day routine, too.
Follow that workout plan and eat right, and you’ll have no trouble building muscle.
What’s your take on muscle groups? Have anything else to share? Let me know in the comments below!
Looking for workouts to effectively train all six major muscle groups? Check out these articles:
The 12 Best Science-Based Strength Training Programs for Gaining Muscle and Strength
The Definitive Guide on How to Build a Workout Routine
How to Create the Ultimate Muscle Building Workout
The post The Best Way to Train All 6 Major Muscle Groups appeared first on Legion Athletics.