Bobsledding, Luge and Skeleton

"Sledding, or tobogganing, was first recorded in the 16th century. Modern racing began in Switzerland in the mid-19th century. Three forms of tobogganing developed: a bobsleigh, or sleigh, has 2 axles and 2 pairs of runners, is steered with a wheel, rope or bungie cord and is operated by teams of 2 or 4 racers; luge uses a single sled (a 1- or 2-seater) with the rider lying back from a sitting position; in Cresta tobogganing the rider lies on his chest. In the later 19th century skeleton was introduced, where a single athlete slides on a sheet-like sled face down and head first in the prone position."
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