‘Sportfasting’ is a system designed to take your body a new direction so that it’s more efficient and better able to maintain a healthy weight. It’s a program that trains your muscles and liver to use energy more efficiently and actually use fat instead of sugar. Essentially this is a change in your metabolism. Most people’s bodies, through years of poor eating, have been programmed to be dependant on sugar for energy. Simply because we eat so much sugar our bodies have come to expect it.