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The danger of over-hydrating during an endurance race.
200 athletes raced up the 1,576 steps on Wednesday.
Here's how extreme temperatures affect your sweat sessions.
Endurance athletes burn twice as much fat on low-carb diets.
The best dog breeds to run with.
From "bonking" to bee stings, be prepared for anything.
Scientists say you may be able to get it without exercise—one day.
Just make sure you try these on a stationary bike.