When it gets that cold, it is hard to stay active and hibernating is the only sensible option. But even then, one of the best ways to stay active and healthy during the winter is to do exactly what’s necessary to prevent frostbite: Keep moving!

Go out and play! When was the last time you built a snowman or had a snowball fight? They’re great ways to burn about 300 calories per hour. And if there’s no snow, try ice skating, which is an even better workout at 450 calories per hour.

Take walks at the mall. If you really can’t stand the cold, this is a safe, simple way to exercise without all the Eskimo gear. Medical experts say a routine of brisk walking can help lower your “bad” cholesterol and blood pressure, reduce diabetes risks, manage your weight and improve your mood.

Work out at home. Pop in a workout DVD or drag out that treadmill or stationary bike gathering dust in the basement. If you don’t have any of these, how about an inexpensive, do-it-yourself home gym? And here are 10 exercises you can do at home without any equipment.

Try something new. Winter sports such as cross-country skiing or snowshoeing are a fun way to burn off mega-calories and stay active. Maybe join an indoor sports league or take bootcamp or Zumba classes.

Refresh and de-stress. Gentle, restorative activities such as yoga and tai chi and qigong can build strength, increase stamina and flexibility, and help you relax. An added bonus: De-stressing can replenish your immune system and help you fight off colds and flu.