You don’t crunches, sit-ups and planks to increase your core strength and definition, just take this 12-move standing ...

This core workout involves just four moves, but with dumbbells and minimal rest, it delivers a serious burn and maximum results.

Soldiers trying to earn the Army Ranger tab will have to do more challenging functional fitness exercises starting day one.

Place your hands by your temples, with your elbows pointing out to the side. Lift your left knee, and at the same time, bend ...