Fittest 50: Ashton Eaton
2012 Olympic champion and decathlon world record holder Ashton Eaton tops the list of fittest male athletes.
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We break down the 100 fittest athletes in the world
SI teamed up with fitness experts and coaches to determine the fittest 50 male and female athletes on the planet.
Office Olympics with Ashton Eaton and Brianne Theisen-Eaton
Former Olympians Ashton and Brianne Theisen-Eaton bring the games to the office as they compete in SI's Office Olympics.
Fittest 50 Criteria: Why Giannis and Simone Biles Came Out on Top
What measures and benchmarks should we use when comparing athletes of all shapes and sizes, from disparate sports? Here's an inside look at how SI choose its 2020 Fittest 50 and why Simone Biles and Giannis Antetokounmpo are this year's top athletes.