The Mayo Clinic lists slouching as one of the major causes of back pain from work. Take note of how you’re sitting at the computer. Are you slumped over? This position could cause muscle fatigue, stretched ligaments and strained spinal discs — all of which can lead to pain. The 2011 Take-a-Stand Project reduced a worker’s sitting time by 66 minutes and saw an average reduction of upper-back and neck pain of 54 percent, with improvements reported within two weeks.