Ah, the treadmill. The weather is getting warmer and it's time to get in shape for shorts, tank tops and swimsuits. The treadmill is of course great exercise but dangerous too! Any time I've been on one, I've always lost my step and have almost fallen off. Luckily, I've always done a great "save" and have never hurt myself, but I looked like a complete idiot in the process. Thanks to YouTube we can check out some of the less fortunate people who have taken a tumble on a treadmill.