Add Yahoo as a preferred source to see more of our stories on Google. Credit: Getty Images Workout challenges can be dumb, especially ones that involve your abs. Yet, we can't get enough of them, ...

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I’m back with day 2 of my 30 day fitness challenge, sharing both my morning cardio and evening leg workout. I start with black coffee and a greens drink, then hit the treadmill. At night I’m back for ...

The hamstrings tend to get a lot of love during a stretch routine (who doesn’t have tight hammies?). When it comes to strength training, though, the quads and calves steal most of the spotlight — ...

Bodybuilding legend and former six-time Mr. Olympia Dorian Yates broke down a leg day warm-up drill for the quads, hamstrings ...

Once a week, I do a calf exercise at the end of my strength routine that involves rising up onto the balls of both feet, then ...