Treadmills are some of the best artificial walking and running machines, and they can be used either in a gym or at home.
They work by moving an electrically-powered belt around quickly in the opposite direction to your walking or running, allowing you to exercise your muscles without actually moving. The effect is like going for a long walk, only without having to brave the elements, hurt your feet or worry about where to go.
At its most basic, a treadmill is little more than the belt, a handle and an ‘on’ switch, but treadmills can potentially have many more features than that. The best treadmills know can be programmed to time you as you run or measure how much distance you would have covered, and alert you when you have done a certain number of minutes or miles. Some models are also capable of counting the exact number of steps you have done, the number of calories you have burned, and many other things besides.
» Read more: What to think about when buying a treadmill
