It wears you out, it hurts your arms and it looks like the stupidest thing ever invented
What is it? You know how much you hate planks? A mountain climber is basically a plank where you run on the spot. I know, right? Fun.
How much does it cost? Nothing. You could drop to the floor right now and do some if you wanted. You won’t, obviously, because that sounds hellish. But you could.
Continue reading...from Health & wellbeing | The Guardian http://ift.tt/23fKOwB
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