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4-day/week Muscle Building Workout (MB.21)

Free program overview — full interactive version lives in the WorkoutsLab app.

Advanced4-DAY PROGRAMBODYBUILDING
4TRAINING DAYS
21EXERCISES
~68SETS / WEEK
MB.21VAULT CODE

1.The week

2.Sample training day

ExerciseSetsRepsRest
Exercises
bench press48, 5—
bent-over barbell row48, 5—
incline dumbbell press37—
wide-grip pull-ups37—
dumbbell flyes210—
seated row210—

Sample: Monday - Chest & Back — one of 4 training days. The app runs the full week with checkoffs, rest timers, and logging.

3.The rest of the week — full exercise lineup

Every movement in the program, day by day. Exact sets, reps, rest periods, and progression live in the app.

Tuesday - Shoulders & Traps

Friday - Legs

Thursday - Arms & Abs

Run the full 4-day program in the app — every day with set checkoffs, rest timers, progression tracking, and the training log.

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