The story

Are you ready to make the commitment to a healthier, happier and longer life? Get in shape in 2008 with CNN's chief medical correspondent Dr. Sanjay Gupta by signing the pledge below and join us as we kickoff our great American Fit Nation tour this summer.

Fit Nation's 2008 "Commit To Get Fit" Online Pledge: Eat Less -- This is 50% of the overall equation. If you eat fewer calories, you'll have fewer to burn off which makes it easier to maintain a healthy weight.

Move More -- This is the other 50% of the equation. We already talked about reducing the calories you take in. Consider increasing the number of calories you burn off as well. Read full article »