Take microbreaks (Tip 18)

[pioneer]

While working at the keyboard, try dropping your hands to your lap and exhaling every single minute. You have to let your shoulders, arms and hands curl down and dangle toward the floor. And after 1-2 seconds, bring your hands back to the keyboard and continue your work.

Remember that you can make the difference between discomfort and health just by taking a momentary interruption in muscle tension. Think of it as carrying a heavy object; if you set it down for just a second, your muscles relax and you’re able to continue carrying it. (ririanproject.com)