I'm 38 and started training jiu jitsu as well as a no-gi combo wrestling/jitsu class. I have an old shoulder injury from playing basketball (dislocation) and it just keeps getting reaggravated. Not enough to be a full on injury, but enough to make me skip a class atleast once a week. Then there will be a week where it doesnt bother me at all but i break a pinky toe. Lmao. I refuse to stop going but i so wish i had started in my 20s. They were shocked when they found out my age and that i was rolling/wrestling with 20 year olds. That respect makes me refuse to skip, probably to the detriment of my shoulder. Ha