If you want to be a better runner, be a mountain climber. There’s no need for an axe and crampons – in fact, the beauty of this exercise is ... of keeping your upper body stable while moving ...

The exercise known as 'mountain climbers' has become a cornerstone in functional training. This move, which combines elements ...

But they also torch calories and work your entire body. Mountain climbers, named after the challenging workout of climbing a mountain, improve both leg and core strength and raise your heart rate.