Your mother was right to tell you to sit up straight! That sound advice could change your life, according to physical therapist Tony D'Angelo. He says one in ten people suffer back pain, and a lot of it is due to how they sit at work. He also says there's a simple and immediate fix if you're having discomfort. He suggests placing a rolled up towel behind you for back support while you're seated. You might also want to think about getting a standing desk to bring the computer to eye level.