Related topics: sports medicine · concussion · sports

Well-built muscles underlie athletic performance in birds

Muscle structure and body size predict the athletic performance of Olympic athletes, such as sprinters. The same, it appears, is true of wild seabirds that can commute hundreds of kilometers a day to find food, according ...

America's 180 on athlete activism

For 50 dormant years—roughly, the period between Muhammad Ali's heyday and the Miami Heat donning hoodies after Trayvon Martin's murder—athletes, as a general rule, steered clear of politics.

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