Improve Your Posture
Also, try Yoga At Your Desk.
Shoulders Back & Down. Slouching the shoulders leads to rounding of the upper back. This stresses your neck, elbows & wrists.
Sitting at your desk Driving your car Performing a Bench Press
Put your shoulders back & down. It will keep you in good health.
7 Postural Habits To Make Now To Increase Your Health - [DumbLittleMan]
This interesting diagram from Flickr’s Bluelephant was clipped from this article also.