Bobsleighing is fast and furious and is great fun to take part in. Bobsleighs are racing sleds designed to carry teams of two or four people, and if you want to make it even more exciting, you can choose to be the one person who frantically runs to get in it whilst itês moving. In a team of four, one is in charge of the breaks whilst the other two sit in the sled as it turns and twists at sharp angles. Itês an intense, fast sport that can reach speeds of up to 90mph. .