When running forward, runners hit the ground near the back of the foot and roll onto the front. Backward runners use a completely different set of muscles to complete the activity. Studies have found that backward runners use more leg muscle and in so doing require 30% more energy resulting in burning more calories. Just the act of walking backwards can increase a level of physical performance. Backward running is now being used in physical therapy due to the amount of decreased stress it places on the knees. This is especially useful for older adults. Studies done at the University of Milan show that, although there is a danger of falling, there is tremendous benefits to a person’s balance. Best to start slowly on a track and with a partner who can guide you.