Plus, chronic illness nearly ruined my bike racing career
 
 
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A new meta-study, which followed 267,000 people, sheds a few answers
 
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After I lost 20 pounds and my red-blood-cell count dropped to dangerous levels, doctors finally knew what the problem was. But no one knew how to fix it.
 
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What if your shoes could track, analyze, and store your running data so you knew exactly what you need to do to get better? Now they can. Introducing the sleek, fast, and aerodynamic HOVR Phantom/SE.

 
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