[mmierz]

Combat sports. Right now I train judo and armored combat (I.e. fighting in full armor with blunted swords and axes)

As a side benefit this forces me to stay fit. I find few things as motivating as knowing there’s a set date in the near future when I will be locked in a ring with someone who is going to try to hurt me

A lot of 30-something programmers like jujitsu since is has the same competitive aspect and a little bit of danger without the heavy impact and attendant risk of brain injury