Photo: Thinkstock

22 of 27
Fastest Way to Warm Up
Surely you know to add layers and apply heat to your body. Another speedy option is to eat or drink something sweet, says Alaska state trooper Lieutenant Barry Wilson, coordinator of search and rescue.

Sugars help build an internal "fire," creating brief heat and quick energy. For longer-lasting fuel, eat GORP (granola, oats, raisins, and peanuts), which provides more slowly released carbs (the fire's "sticks"), protein, and fat (the "logs").