Keep Your Workout Resolution Going With This Cheap (Free) Exercise

If I told you that one cost-free, equipment-free, all-body exercise will build your lungs and nearly every muscle in just minutes, you'd probably think I was an infomercial worm trying to sell you a gadget.

But I'm just a finance blogger who hates paying to sweat. The average gym membership now costs around $50 a month, according to a CNBC report, on top of initiation fees. You could shop around for the best deals but you're still going to shell out money to work out under someone else's roof. And you probably won't use the equipment as much as you think you will, given that 70% of gym members overestimate how often they'll visit, says the book Freakanomics.