Plyometrics help build power for faster running. Work your quads, glutes, and hamstrings with this short series of movements ...

How about a 7-day core-sculpting challenge? Enter ... and each cardio workout takes 30 to 45 minutes, depending on your fitness level and goals. Ready to get stronger? Grab your dumbbells and ...

Looking for a quick ab workout to fire up your core? This seven-minute intense ab challenge targets your lower abs with no equipment. To find out for myself, I unrolled my yoga mat and gave it a ...