Study: Triathlons can pose deadly heart risks

(AP) -- Warning to weekend warriors: Swim-bike-run triathlons pose at least twice the risk of sudden death as marathons do, the first study of these competitions has found.

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<p><a href="http://www.physorg.com/news157482153.html">Study: Triathlons can pose deadly heart risks</a></p> <p>(AP) -- Warning to weekend warriors: Swim-bike-run triathlons pose at least twice the risk of sudden death as marathons do, the first study of these competitions has found.</p>