Training with extreme intensity, rather than high volume, can be advantageous for hypertrophy when time is limited and muscle groups are trained only once per week.

“It involves training each muscle group directly once per week. Yes only once. You do one light and one moderate set just to get the mechanics and blood flow going, then 1 (maybe 2) all sets to failure * in excellent form * which means controlling the weight all the way up, contracting it hard and lowering it slowly.”

“Depending on the muscle group, you do anywhere from 2 to 4 exercise exercises per muscle group total.”

“it's at least for me more advantageous to just train extremely hard”

“Mike Mentzer, one of the great trainers gave me the advice to do low volume, high intensity resistance training. >> Mhm. Each body part once a week and train only three times per week, maybe four. Never more than 75 minutes, but to really learn to enjoy training extremely hard.”

“And that was roughly around four sets per muscle per week, which, again, can be done two, maximum, you know, three half-hour sessions, two to three half-hour sessions per week.”