Comment by stouset

I do not take testosterone. I occasionally try to make a habit of taking creatine but other than that and whey protein while weightlifting (another habit I struggle to reliably form) that’s it.

Maybe I’m out of touch but I would be astonished to find that it was even remotely close to “nearly everyone” for recreational hobbyists over 35.

The level of injury is just not as high as you’re suggesting for people who aren’t training to be elite competitors. I’ve had perhaps one “small” injury (muscle pull, joint overextension, etc.) every six months or so, reasonably consistently for the last ~7 years of BJJ / judo which I do three to five days a week, 2-3 hours a day.