If you're overweight and a little gray on top, have we got the antiaging secret for you! Start it now and you'll increase your odds of being disease-free in your next decade.

The secret? Walking. Or jogging or gardening or doing just about anything that gets you up off the couch. Research shows that women who are active in their 60s enjoy far better health into their 70s.

The Good Habit That Gives Back
Yep, it's never too late to exercise. A study tracked the habits of more than 13,000 60-something women, and the fitness-minded ones were much more likely to make it into their 70s free of chronic diseases and serious health problems. The more active women also experienced less physical and mental decline over time. And best of all, their odds of living longer and hanging onto their health were bolstered even if they were overweight! (Here's another habit that helps you live longer.)

How to Stay on the Horse
Need more reasons to walk? Then consider this: You can do it pretty much anytime of day -- with little gear -- and it has a low risk of injury. Try these tips for getting into a walking groove and getting the most out of your heel-to-toe time:

• Turn up the burn as needed. 
• Don't overcommit

Do Even More
In the study, the active women with healthy BMIs were the most likely to live long and keep their health.

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