Fitness Experts for Crystal

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  • Angela Bassett
  • Tina Turner
  • Serena Williams
  • Usain Bolt
  • Shelly-Ann Fraser
  • Billy Blanks
  • Jeannette Jenkins
  • Michelle Obama
  • LL Cool J
  • Sean T
  • A.J. Johnson
  • Rosa Acosta

Usain Bolt

It takes a lot of exercise to become the fastest man in the world and Usain Bolt is not afraid to put in that work. Bolt's dedication to training is only rivaled by his upbeat laid back personality. (Photo: Michael Steele/Getty Images)

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