The Diet Detective: How to Perfect Your Posture  Want to look
slimmer without doing any "real" work? How about getting rid of
back and neck pain? It all starts with one simple thing:
posture. We talked with a few posture experts, and here's what
they had to say:  Why is good posture so important?  Nothing
ages you faster than a stooped posture. A strong, straight spine
portrays youth and vigor, says Janice Novak, author of Posture,
Get It Straight! ( Slumping decreases your chest measurement,
narrows your shoulders and can decrease your height by up to 2
inches.  And finally, posture is the single most important
factor in the health of your back and joints. According to the
National Institutes of Health, poor posture and body mechanics
are the No. 1 cause of back and neck pain.  What are the main
culprits responsible for our terrible posture?   Basically, we
sit too much. If we're not sitting in front of the computer,
we're sitting in front of the TV. "Sitting for a long time is a
major cause of back discomfo