All long distance running: Page 3

• How Running Makes You Less Fit

  • By Matt Fitzgerald
  • Published Dec. 15, 2010
  • Updated Dec. 22, 2010 at 9:10 AM UTC

  Chances are you are slower over very short distance than your couch potato twin.

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  Vitamin D Deficiency And Endurance Exercise

  • By Nutrition
  • Published Oct. 8, 2010

  Low levels are likely limiting your performance, and may compromise your health.