Brandon Belt, a first baseman for the San Francisco Giants, says he relished his stint in San Jose in 2010, even though the low rungs of minor-league baseball meant seven-hour bus rides to games and balky clubhouse air-conditioning in the summer.

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"There was a proposal about seven or eight years ago for the building regulations to have a presumption against air conditioning in the UK and the industry fought against that and the industry won, " he says.

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But after seven weeks of training, I have become acutely aware of the body part that needs the most conditioning.

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