Ski your way to better sleep.

Have trouble sleeping? Maybe you should ski more.

The National Sleep Foundation reports that exercise in the afternoon can help deepen shut-eye and cut the time it takes for you to fall asleep. However, a 2003 study found that a morning fitness regime was key to a better snooze. Researchers at the Fred Hutchinson Cancer Research Center concluded that postmenopausal women who exercised 30 minutes every morning had less trouble falling asleep than those who were less active. The women who worked out in the evening hours saw little or no improvement in their sleep patterns.

No studies have proven conclusively the best time to exercise, but there's unanimous agreement that exercise helps you fall asleep better and sleep more restfully.

Hey, it's as good an excuse as any to hit the slopes.