What is the best position to sit and to place your hands while you program?
Recently I've been more concerned about the way I sit while I code, I don't think I have any kind of injury yet but one of my coworkers had to take a couple of days off because of his column and I began to worry about this. 
So, how do you sit? how do you place your hands? Do you recommend any keyboard in special? any chair? I have been looking into a new keyboard and maybe I' ll ask for it at work. Also my chair isn't top-notch so any budget oriented option?
Thanks, Joaquin.




related: [keyboard for programmers][1] , [what is the best keyboard mouse for ergonomics or to prevent wrist pain?][2] , [What is the best physical operating environment for a developer?][3]


  [1]: http://stackoverflow.com/questions/687/keyboard-for-programmers
  [2]: http://stackoverflow.com/questions/96944/what-is-the-best-keyboard-mouse-for-ergonomics-or-to-prevent-wrist-pain
  [3]: http://stackoverflow.com/questions/82620/what-is-the-best-physical-operating-environment-for-a-developer
What is the best position to sit and to place your hands while you program?
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Recently I've been more concerned about the way I sit while I code, I don't think I have any kind of injury yet but one of my coworkers had to take a couple of days off because of his column and I began to worry about this. 
So, how do you sit? how do you place your hands? Do you recommend any keyboard in special? any chair? I have been looking into a new keyboard and maybe I' ll ask for it at work. Also my chair isn't top-notch so any budget oriented option?
Thanks, Joaquin.




related: [keyboard for programmers][1] , [what is the best keyboard mouse for ergonomics or to prevent wrist pain?][2] , [What is the best physical operating environment for a developer?][3]


  [1]: http://stackoverflow.com/questions/687/keyboard-for-programmers
  [2]: http://stackoverflow.com/questions/96944/what-is-the-best-keyboard-mouse-for-ergonomics-or-to-prevent-wrist-pain
  [3]: http://stackoverflow.com/questions/82620/what-is-the-best-physical-operating-environment-for-a-developer