The bro split trains each muscle group once per week with maximal session volume. Frequency-per-muscle is lower than PPL or upper/lower (1x vs 2x per week), but session volume is higher, typically 15-25 working sets for the target muscle.
Modern hypertrophy research generally favors higher frequency (2x/week) for most intermediate lifters, but advanced lifters who can productively absorb very high single-session volume can still grow on a body-part split. Take every set close to failure, since you only get one weekly chance per muscle to drive stimulus.
On MuscleBuddy every exercise in this program runs with double progression. Compounds anchor each day at RPE 8; isolation pushes to RPE 9. MuscleBuddy tracks how many reps you hit per set and advances the load when every set reaches the top of the rep range.
With a once-weekly frequency you have six days between sessions for a muscle to fully recover, but the volume per session is so high that systemic fatigue (sleep quality, joint stress) limits progress, more than the muscle itself. The block runs four working weeks with no deload week written in. On Pro, MuscleBuddy eases a week for you when your recovery scores trend down, and you can mark any week a deload in the periodization calendar. On Free, a lift that falls short of its rep range three sessions in a row gets a 10% back-off, and the next block you generate closes with a scheduled deload week.