Unsightly and painful, cold sores are caused by a highly contagious virus called herpes simplex 1 (HS1). HS1 is spread via skin-to-skin contact, including kissing and sexual contact, and is similar to
Discover these simple, healthy ways to refuel before and after exercise.From ancient Greek Olympians who sometimes ate only meat prior to competing, to modern-day marathon runners who load up on carbo