High-intensity interval training, or HIIT, is a great way to torch calories, boost your metabolism and get a great workout in a shorter amount of time. And if you're a fan of hopping on the treadmill ...
A video uploaded to YouTube by Californian user @abzde shows a slinky walking to epic music on a treadmill. The original video lasts three minutes and twenty seconds, as the slinky uses perpetual wave ...
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