Have you gained a few pounds this winter? Many of us have thanks to the Arctic vortex or latest snowstorm keeping us indoors. Research by Bruce Spiegelman, the Stanley J. Korsmeyer Professor of Cell Biology and Medicine at the Dana-Farber Cancer Institute, suggests that a brisk walk in the cold air is the perfect thing to do in order to activate a certain type of fat in your body—called beige fat—that boosts the calories you burn by up to 30 percent to generate additional body heat.
