Back problems
keeptrying: Improve your hip mobility and the strength/activation of your _glutes_.It takes a bit of reading to understand whats happening to your body but essentially sitting for long periods of time weakens your glutes and also the mobility of your hip.
This in turn causes your lower back to compensate (flexion) in any movement requiring glutes/hip movement. Since the back wasnt designed for that movement, you tend to get hurt.Start with these 2 articles and you'll understand what I mean:http://www.t-nation.com/free_online_article/sports_body_trai...http://www.t-nation.com/free_online_article/sports_body_trai...I'm a programmer too but I've had no back problems as soon as I started fixing my glutes/hip-mobility.