Best 4-Day per Week Body-Part Split Routine for Mass

A body-part split that will get you real results.

David Welburn
Forever Fit

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A man, showing his muscular arm, in the gym.
Photo by Krzysztof Biernat: https://www.pexels.com/photo/muscular-man-at-gym-15018025/

There are a great many ways you can set up your workout schedule, and, although workout design is not the most important factor required for making progress, there are good ways and not-so-good ways that you can go about it.

If you are a complete beginner, for instance, you will probably make the best gains if you follow a full-body routine, training three times per week. Once you’ve gained a good amount of strength and size, however, you’ll find these will become too demanding, and you won’t recover effectively if you continue to do them.

At that point, I usually recommend people move on to an upper/lower body split, or a torso/limbs split. But once you’ve been training for perhaps 2–3 years, you might benefit by splitting your body up a bit more.

The 4-Day per Week Body-Part Split

Four-day-per-week body-part splits are not just for really advanced guys or steroid-enhanced trainees. They can also work great for intermediates and natural lifters. There are many different ways you can split your body up, though, but personally, I think this way is the best:

  • Day 1 — Chest & Biceps
  • Day 2 — Legs & Abs

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David Welburn
Forever Fit

Fitness Instructor with over 45 years of lifting experience. Former Biomedical Scientific Officer. Top writer in Health.