>> reporter: bad posture doesn't just lead to bad pictures. you're also risking back pain, headaches, poor digestion. a new study from israel found that employees who were simply shown a photo or web image of how they sit relaxed and sat up straighter, improving their energy, blood flow, even their moods. okay, so now you're physically stronger. what about the mental fatigue from a day of desk work? one simple solution, get up for a few minutes and take a walk on a quiet street or in the park. believe it or not, taking in the sights and sounds of nature actually calms the brain. in fact, researchers from the university of michigan found that workers who took just a ten-minute break to observe trees and flowers, even in photographs, saw their memory and attention span jump by 20%. >> the body is made for motion. not for keeping frozen posture for long periods of time. >> reporter: and if you're a closet internet surfer a stutu from the university of singapore will thrill you. occasional zone-out breaks like