Muscle & StrengthOnce a week (the classic 'bro split') vs twice a week โ here's what the current research actually favors.
Training each muscle group at least twice a week tends to produce better muscle growth than the traditional once-a-week 'bro split,' primarily because it allows for more effective weekly volume distributed with better recovery in between.
They're simple to plan and allow a genuinely brutal, high-volume session for one muscle group. It's not that this doesn't work at all โ it's just generally less efficient than spreading the same volume across two sessions.
A push/pull/legs split repeated twice in a week, or a full-body routine done three times a week, both naturally hit each muscle group with the recommended frequency without needing a complicated schedule.
Total weekly volume and consistent progressive overload matter more than whether you technically hit a muscle group once, twice, or three times โ frequency is a tool for fitting in enough volume, not a goal in itself.
Muscle & StrengthThe single most important principle in strength training, boiled down without the jargon.
