You Won't Believe Why This Runner Lost Her Race

We bet she's still kicking herself.

Should Pace Setters Be Banned from Marathons?

The Chicago Marathon just nixed their "rabbits." Find out why.

The Best Alternative Workout for Every Type of Athlete

Get faster, stronger and fitter with the best cross-training for your sport.

Multitasking Could Tank Your Workout

The downsides to mid-sweat session distractions—and the easy fixes!

8 Ways to Make Your Cardio Workout Harder (Not Longer)

Try these trainer tricks for more burn in less time.

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The No. 1 Reason Runners Should Cross Train on a Bike

Science says going for a spin might actually make you run even faster.

30 Reasons a Bike Is Better than a Boyfriend

Who needs a guy (and all the hassle that comes with one) when you have a two-wheeler to make you happy?

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5 Signs Your Running Obsession Has Gone Too Far

Yes, running is great exercise, but your cardio addiction could actually be hurting your stride.

4 Lateral Moves That Make Harley Pasternak Happy

The celebrity trainer explains how side-to-side exercises can seriously improve your fitness.