[_DeadFred_]

I did MMA at 40. Problem is your reflexes just can't keep up with an 18 year old. My knee got blasted by a faint intended to just make me move back because I just couldn't move out of the way as fast as the kid's kick.

Whatever you do my advice is if it's high impact join the 'old man's league'. They better understand everyone's limits.

[throwaway7ahgb]

I did Krav Maga at ~40. I don't think reflexes or stamina were my issue. Mine was recovery.

It is a tough sport and one bad day grappling or boxing and I'm in pain for weeks which limits training. It's not a easy sport to do half-way.