Ballet
In a 1978 article in the University of Nebraska Press journal on Women's Studies titled Ballet as Sport; Athletes on Pointe, Pamela Patrick asserts that, given all levels of physicality in sports and taking into consideration a slew of scientific research and data, the one sport that takes the most out of the body and requires the most of the mind is Ballet. Football, Basketball, and several combative sports trail below several spots.
Interestingly: the only sport that comes close to being as physically exhaustive on the body is Bullfighting.
