I seriously urge you to not just regurgitate what Dr. Mike says dude. He’s a scam artist. Stretch mediated hypertrophy is a result of a process called sarcomerogenesis, which is essentially your muscle fibers getting longer rather than thicker. Unfortunately, this isn’t possible for the majority of muscles because they don’t have leverage in the lengthened position. The biceps for example, cannot experience stretch mediated hypertrophy because the brachioradialis has leverage when lengthened.
There's only been one study I can remember that showed you can get the same results that way, but the weight will be significantly higher and risk of injury. I know it doesnt look cool, but drop the weight and up your reps so you dont die lmao on top of that there's exponentially more evidence showing tension under time and the stretch is better for hypertrophy
Way too many kids who have been lifting for 4 months watch a few Dr. Mike or Milo Wolf videos and think they are hypertrophy experts and say “studies prove” when they can’t actually give you the study they supposedly are citing. Dr. Mike and Milo Wolf are snake oil salesmen, and watching him does not make anyone educated. Anyone talking like they know shit when they haven’t taken an anatomy or physiology class needs to learn to stfu.
It wouldn’t gain the greatest stimulus, you’re just enabling those SMH adaptations. The chest is actually one of the few muscles that can benefit from SMH since no other muscle has better leverage for shoulder adduction in any position, but that is the exception, not the rule. Most muscles cannot experience SMH.