Soccer referees use yellow cards to communicate an official caution to a player, substitute or substituted player. Unlike a verbal warning, a yellow card can have more drastic and long-lasting effects. A referee might show a player a yellow card for a number of different reasons. A referee will show …

The Snellen eye test, designed by Hermann Snellen in the 1860s, is one of the most familiar sights at any eye doctor’s office. Comprising 11 rows of letters or symbols that become progressively smaller, the Snellen eye test measures visual acuity, which measures both sharpness of vision and the ability …

BSN True-Mass is a high-calorie, high-protein supplement that is intended to assist athletes in gaining weight. Because intense exercise burns many calories, athletes often have trouble gaining weight. In sports such as bodybuilding and football, gaining lean muscle mass is required for optimal performance, so a high-protein weight gainer may …

The right training program can make the difference between your first amateur win and your first amateur concussion. Successful boxers pay significant attention to developing leg strength. Strong legs not only translate into punching power, but also contribute to the footwork and endurance you’ll need to survive several rounds in …