Snowshoeing is a great form of aerobic exercise that will improve or maintain cardiovascular fitness as well as burn calories. It uses major muscle groups at relatively high intensities for extended periods of time, thus requiring a high caloric expenditure. Your metabolic rate increases in cold weather, and the addition of the weight of snowshoes on your feet combine( with the resistance of moving through snow adds up to a greater demand for energy than simply walking or running. Snowshoeing can burn up to 45 percent more calories than walking or running at the same speed.