Watch full episodes of the Science Channel Series "How It's Made." This is how rope is made. These ropes are made from thousands of nylon fibers that are finer than human hair, but stronger.

A month-long jump rope experiment reveals powerful fitness benefits including improved cardiovascular health, enhanced ...

Science shows that the best jump ropes can make you a faster runner, a more explosive jumper, and a leaner dude. Add a little weight, and this exercise is a killer upper body workout, too.