Bobsledding

Bobsledding, winter sport in which teams of two or four steer a sled down an icecovered track, reaching speeds of more than 135 km/h (84 mph). The fastest sled wins, often by mere hundredths of a second. The sports name comes from its early days, when sledders bobbed their bodies back and forth on straightaways to help the sled along. Bobbing was never proved to work and was soon discontinued, but it remained a part of the sports name.