This past winter was one of the mildest on record in Connecticut, and it may portend a particularly hot summer. This can be of concern to those of us who exercise outside. For healthy persons, body heat generated by heavy exercise increases 10 times over resting baseline. For well-trained athletes, it can increase 20 times. (Unfortunately, 80% of this energy is lost as heat; only a small percentage is converted to muscular work.) To prevent the body from overheating, this heat is transferred from the body core to the skin, where it is released. At rest, overheating is prevented primarily […]
↧