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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The Sprint-and-Sculpt Hill Workout

Runners, tackle tough hills—minus the huffing and puffing—with this surefire circuit.

The Fat-Sizzling Stairs Workout

Step It Up (like Channing Tatum is waiting at the top) with a firm-and-burn stairs routine.

5 Signs Your Running Obsession Has Gone Too Far

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

The Sandy Circuit Workout

Take your routine to shore to torch two times the calories and sculpt every inch of your beach bod.

This Is the Best Free Fitness App Ever

It's official! Research says most downloadable sweat sessions aren't worth it—except one.

Get Fit and Get On with Your Day in Just 20 Minutes

These big-bang moves target every muscle for an efficient firm-and-burn.