· fitness
The Upper/Lower Split: Complete 4-Day Guide
The upper/lower split trains every muscle twice a week in just four sessions. Day-by-day workouts, sets and reps, plus 2-, 3-, and 4-day variants.
The upper/lower split trains every muscle twice a week in just four sessions. Day-by-day workouts, sets and reps, plus 2-, 3-, and 4-day variants.
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