I’ve spent more time than I would care to admit pondering this question and I’ve spent years of my life experimenting with various full body workouts and split routines.
I understand how confusing and frustrating this question can be. For example, tons of smart trainers I know who have great physiques focus their strength training workouts on split routines. But yet they train every one of their clients with full body workouts!
Why the contradiction?
Just so we’re on the same page, a full body workout means you are exercising your entire body with all muscles being stimulated in one workout, where as a split routine (aka training split, or body part split) you separate your muscle groups, or movement patterns on different days. For example, if you are working out 3 days in a week, you can complete chest and back exercises on one day, legs on another day, and shoulders and arms on the third day, which is a type of body part split.
The following will teach you about the pros and cons of full body workouts and split routines so you can decide which type of routine is right for you.
Full Body Workout: Pros & Cons
Balanced Body – You will be able to build a well balanced body by hitting all muscle groups in one workout, which is more natural and more closely mimics real life. Many physiologists think of the body as one muscle because all muscles are connected to each other, so splitting up the body each workout may not make functional sense.
Miss A Workout, No Biggie – If you normally workout 2x per week and you happen to miss a workout, you have already worked out all your muscle groups with just one workout. Not a big deal.
Maximize Calorie Burn & Fat Loss – When someone has 30lb to lose, I like to keep them on their feet with their legs moving, so full body workouts can work very well. Most smart trainers out there train their overweight clients with full body workouts 2-3x per week. Regarding muscle building, a full body workout can debatably create a more powerful hormonal response to help build muscle, but it’s harder to fully stimulate a muscle with sufficient volume to spur growth.
Can Be Difficult To Focus On A Given Muscle Group – It’s hard to hit a given muscle group, or movement pattern very intensely, especially legs because the intensity can be too tough to handle along with the lengthy recovery time after a workout.
Can Lead To Overtraining – If you like lifting weights 3x per week, doing full body workouts each workout can lead to overtraining if not structured properly. Hitting each muscle group too hard will likely cause an overtraining response. A muscle that has been worked with heavy weights thoroughly (6+ sets) can take a good 5-6 days to recover.
If you really want to do full body workouts 3 or more times per week, you need to change up the movement patterns, lift lighter weights and do circuits, and/or take down the number of sets per muscle group.
Intensity Can Be Hard To Handle – Intensity of full body workouts multiple times per week can be tough to sustain, especially as you become more advanced and start lifting serious weight. In his prime, Arnold Schwarzenegger tried High Intensity Training (HIT), which is a very intense type of full body workout. He said he would rather retire to Austria and become a ski instructor than do those workouts. I can’t blame him.
Who should do a Full Body Workout?
Cardio Fanatic- If you love doing cardio, but hate strength training, definitely do full body workouts, preferably circuit training workouts. Just a couple times per week will go A LONG way.
Beginner – If you are a beginner, stick to full body workouts. I also like full body workouts for older adults (my dad who is 65 years old does 2 full body workouts per week and it’s worked GREAT for him).
Intermittent Exerciser – If you are strength training 1-2x per week, you should strongly consider full body workouts, or an upper body/lower body split.
Enjoy Metabolically Intense Workouts – If you are more advanced (i.e. lift very heavy) but love pushing yourself to the max every workout and maximizing calorie burn, full body workouts will do the trick.
Body Part Split Routine: Pros & Cons
Superior For Body Shaping – You have more control over the targeted development of your physique. So if you want to spend a little extra time on increasing the width of your shoulders, then you can do that. To my knowledge, there are only a handful of natural bodybuilders and fitness models who do full body workouts consistently, while the vast majority use some type of training split.
Very Manageable/Easier – Lifting weights should never be easy, but if you like lifting heavy, it’s more manageable if you are only focusing on 2-3 muscle groups at a time, or less. It’s less metabolically challenging.
Easy to Switch Up Workouts – Switching up your workout routine can be as easy as changing your body part split so you focus on different body parts on different days (which is what I’ve been doing as of recent), or simply substituting different exercises for a given split.
Less Overall Calorie Burn – If you are doing an arm workout, the calorie burn will be less than a full body workout. There are ways as I describe in my Get Lean Guide for making a body part focused workout more efficient to help burn a lot more calories, but on average, full body workouts burn more calories, sometimes a lot more.
Muscle & Strength Imbalances – Ever see the guy who has arms that are 4x as big as his calves? My guess is that guy is not doing full body workouts, but a body part split routine. If your workout routine is not structured properly, it’s pretty easy to overdevelop certain muscle groups at the expense of others and develop muscle imbalances from both from an aesthetic and strength perspective.
Can’t Skip A Workout – Well you can skip a workout, but it’s problematic. With most training split routines, you are going to hit each muscle group once per week, so if you miss a workout, two weeks will go by before you hit that muscle group again.
Who should use a Split Routine?
Fitness Model/Bodybuilder – If you like (1) lifting heavy, (2) hitting a muscle hard while (3) having great control over shaping of your body, then do split routines, or training splits.
Advanced Lifter – If you’ve been lifting for a long time and religiously hit the gym, or lift weights at home 3-5x per week, then stick with split routines. I don’t see any reason to change as long as you are hitting your legs and core on one of those days AND you have your nutrition under control. If you have over 20% body fat, you should seriously consider full body workouts to help maximize calorie burn.
Get Nauseous Easily With Full Body – Some people after a full body workout will get nauseous, their lips will turn white, and they will want to hurl. This can happen if someone is out of cardiovascular/lifting shape, but it also happens to some people who can’t handle the metabolic intensity of a full body workout. I think it’s a genetic thing, like how some people have cast iron stomachs and can eat anything without getting sick. This is a very important factor for deciding whether to do full body workouts, or split routines.
What If You Could Get All The Benefits of a Full Body Workout Without The Negatives?
Well, that’s along the lines of what I did with the 8-Week BuiltLean Program I developed and how I personally workout. Intuitively, you want to maximize calorie burn while keeping muscle mass and creating a favorable hormonal response, so the first month of the BuiltLean Program uses full body workouts 2 times a week, with one day of high intensity interval training, then the second month switches to a routine that is more focused on specific muscle groups and movement patterns during each workout completed 3 times a week, but is still technically full body because every muscle is used (HIIT conditioning is completed at the end of each workout).
I did this because shifting from basic full body workout to full body workouts that are more targeted allows for a great progression, changes up the workouts, and I wanted you to try both styles to see which one you like more so you can sustain the workouts for the long haul.
At the end of the day, like most of these intractable fitness questions, a full body workout vs. split routine really depends on your goals and what you enjoy. We’re all different. You can effectively build muscle, or lose fat with both types of workouts if you train hard, have a sensible routine, and focus on nutrition. With that said, I do think full body workouts is the way to go for most people to help you develop the most lean, strong, and well balanced body possible.
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