It looks very plausible that stretching before you exercise doesn’t do much for you. Multiple older surveys suggested this.
Annoyingly, the studies linked in the previous paragraph are 2 decades old, and somehow I can’t find a large, well controlled, trial.
sameeeee! It’s a form of self-massage, and massage is well understood more generally. it won’t make muscles longer but it’ll help a lot with adhesions, tender points and postural tension.
recently I’ve been getting some great results out of using a harder plastic massage ball for some areas, seems to get deep into my psoas, quads and calves especially. also love using a racked barbell to mobilize triceps, rotator cuff, and hamstrings! it hurts so good!
I still keep an old lacrosse ball in the gym bag for that exact reason