I took up Aikido for a year to just spend time with my 13 yr old son. We had been sprint kart racig for years. then all of a sudden I had karts that were not getting driven.
Anyway this form of Martial arts is pretty neat and low impact more of an art than Martial . I got stronger, more flexible, lost some fat and gained muscle fitness and endurance.
Stay active and you will live longer. yea I just made that sound easy huh?