Do you have a job or lifestyle that keeps you seated for long periods of time? Are you at that computer for hours in a day? If so, you've probably already started getting all kinds of pain and discomfort in your body, whether it be neck pain, lower back pain, headaches, jaw pain, hip pain, wrist/arm pain, and so on.
If you find yourself seated for hours upon hours a day, the best thing you can do for yourself is the following:
-Set an alarm on your computer, or somewhere on your desk, to go off every 20-30 minutes.
-When the alarm goes off, stand up. Stretch your arms overhead. Do some head/neck circles. Shake your arms out. Sit back down and continue your work.
The human body is simply not designed to sit in one position for long periods of time (let alone sit in the types of chairs that we're given). No matter how ergonomic your setup, your body needs to move at some point. Just a tiny break every 20-30 minutes to reset your body will do wonders. And if you can't find a few seconds to do this much for yourself, think about whether or not you'll have the time for all the back and neck pain you'll continue to accumulate.
Take care of your body. You'll work and play better if you do.