On the physical demands (speaking as an 37yo coder), I've found these things to be very helpful... - yoga (which you've got covered) - a kneeling chair does w

On the physical demands (speaking as an 37yo coder), I've found these things to be very helpful... - yoga (which you've got covered) - a kneeling chair does wonders for posture - placing your monitor at the proper height (eye-level is 1/2-1/3 from the top of the screen otherwise you tend to crane your head forward and downward) - stepping away from the screens regularly (set a timer to remind you because it's easy to blow this one off) - eye exercises (especially this one...alternate focusing on the tip of your nose and focusing on a far distance) Good luck