Use the 20-20 rule. "Trying to sit up perfectly straight all day is impractical and will only tire you out," says Dr Alan Hedge, director of the Human Factors and Ergonomics Laboratory at Cornell University in the US.
Every 20 minutes, stand for 20 seconds and stretch or shake things out. "Just 20 seconds away from your computer screen reduces fatigue and increases blood circulation," says Hedge. Now you'll have the power to sit up straight.
Still hunched over? Try the Desk Jockey workout
May 16, 2012