Don't forget safety gear — and sunscreen

If it's dark when you exercise outside, wear reflective clothing. And if you ride a bike, both headlights and taillights are a good idea. To stay steady on your feet, choose footwear with enough traction to prevent falls, especially if it's icy or snowy.

Wear a helmet while skiing, snowboarding and snowmobiling. Consider using chemical heat packs to warm up your hands or feet, especially if you have a tendency to have cold fingers and toes or if you have a condition such as Raynaud's disease.

It's as easy to get sunburned in winter as in summer — even more so if you're exercising in the snow or at high altitudes. Wear a sunscreen that blocks both UVA and UVB rays and a lip balm with sunscreen. Protect your eyes from snow and ice glare with dark glasses or goggles.