The science of the sport is inexact.

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"As long as you're with the front pack, there's a feeling that you're safe, " says Jonathan Dugas, a sports scientist and author of the blog Science of Sport.

WSJ: Menu

John Porcari, a professor in the department of exercise and sport science at the University of Wisconsin-La Crosse, recently tested 42 student athletes in an experiment.

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The next explosion comes from Tim Noakes, the Discovery Health Chair of Exercise and Sport Science from the University of Capetown in a commentary ( Role of hydration in health and exercise) in which his take can succinctly be summarized as, if you get thirsty you should drink and that over-hydration is a much more common and dangerous risk to the athlete than dehydration.

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In order to help you better, I consulted with Dr. Steve Fleck, chair of the Sport Science Department at Colorado College and a member of the International Society of Sports Nutrition.

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The biggest threat to their chances of winning will come from an all-English trio of Jamie Staff, Matt Crampton and Jason Kenny competing under the flag of sponsors Science in Sport.

BBC: SPORT | Other Sport... | Cycling | Pendleton sets new British record

Over the years these have included polo, competitive horse carriage driving (a sport in which he has represented Britain) science, the study of UFOs, practical jokes, painting and taking the wheel of his own London taxi.

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Those that show the most potential are promoted to Team AEGON , a group of more than 40 players aged from 13 to 27 that are provided with full training support at either the NTC or a training performance centre of the player's choice, as well as receiving substantial funds towards travel and a range of sport science support.

BBC: British tennis battles against perceptions