3 Surprising Things That Age You

When it comes to staying healthier than a 22-year-old Olympian, you know that eating right and exercising play huge roles. But these lesser-known factors count, too:

How much you complain -- or don't. Women, if you don't like how he's handling the vacation plans, or you otherwise think he's all wrong, staying clammed up can cost you. Clamming up makes you four times more likely to die earlier than your peers. But if it's your job that's stressing you, and you complain too much, it can cost your spouse. Guys married to women who come home upset by their work situations (when the upset is disruptive to home life) were nearly three times more likely to develop coronary heart disease than their peers were. If you can't find a way to change things or to get better at coping with these situations, then at least make sure you do everything else to keep your health in top shape.

Not getting the good stuff from sunshine. Keep staying in the shade and wearing sunscreen (especially to prevent wrinkles), but make sure you're getting enough vitamin D another way. Namely, getting 1,000 international units a day (1,200 if you're a woman over age 65) in the form of supplements. This vitamin is not just good for your bones and immune system but also helps your heart.

Late-night Googling. The light from computer screens can be enough to mess with your body's natural "time to go to sleep" signals. And when your sleep is compromised, so is your health and longevity.