Treadmills are an essential part of any gym, as they simulate two of the best kinds of exercise there are: walking and running. While you could just as well go for a walk or run outside, a treadmill allows you to do it in a comfortable, controlled environment, where you can exactly set the speed you want and how long you want to run for, and measure your performance against the last time. Because the treadmill knows all the conditions of your walk or run, it can even calculate things like how much energy you have used in calories.
You can also get treadmills to use in your home, which means that you can do things like watch TV while you use it, instead of having to brave the elements outside. It is an easy way to get a workout, as walking and running are things that we all know instinctively how to do, and are very unlikely to do incorrectly as can be the case with some more complicated exercises.
However, treadmills can also have downsides. They can take up a lot of space in your house or flat if you dont have a dedicated exercise room, and they are often very bulky to carry from one place to another, often making it impractical to have the treadmill where youd...