[ramtatatam]

All my friends who work in IT are saying it's good to do sport - jogging, cycling, tennis, some of them even do martial arts.

As for myself - I never found myself doing sport for longer than a week apart from chess (not a sport really...) - I love playing chess :-) Recently I was also solving some funny problems here: https://www.codingame.com/leaderboards/global/challenge/back... (found on ycombinator!)