5 Day Muscle And Strength Building Workout Split, Backed by Science

Size Phase

The next 3 workouts in this program focus on blood volume and nutrient delivery. The goal rep range will be 8-12. Rest periods will be 60-90 seconds between sets. The size phase is all about getting as big of a pump as possible.

Make sure to use exercises in the size phase that you have a good mind to muscle connection with. Feel free to swap out one of the exercises I have listed for a different exercise if you get a better feel from that exercise. For example, you could substitute standing dumbbell bicep curls with standing EZ-bar bicep curls.

Ab Training

Some people might argue that direct ab training is not needed since the abs get so much indirect work from big compound lifts like squats, overhead barbell press and deadlifts.

Although that is true, I personally feel that to make the abs really ‘pop’, direct ab work is needed. At the very least, it can’t hurt. In the size and strength training program, you will be training abs three times per week. Add the ab workout to the end of three workouts each week.


I do not recommend doing a lot of cardio on an intense workout program like this. Cardio taps into your body’s recovery ability and puts you at risk of over training. It’s also simply not needed.

Cardio isn’t magic. It simply burns calories. You could achieve the same effect by simply removing calories from your daily diet. Keep cardio minimal on this program. If you want to add in cardio, keep it low intensity.


Supersets are when you perform two exercises back to back with no rest in between.

After finishing the first exercise, you immediately start the second exercise. After both exercises are completed, you take the prescribed rest period.

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