120-kilogram exercise machine The robustness of this device and its capacity to operate for up to three hours straight are its defining features. It helps to increase the body's level of physical fitness and is beneficial for tightening and slimming all areas of the body. How do I pick the right treadmill? Firstly, you should be aware that the person utilizing the treadmill will determine how beneficial it is, not the kind of equipment. All devices have the same intended purpose, regardless of their size or type. You need to know the right ways to pick the best treadmill for you before you purchase any equipment. Here is a summary of them: First, pick a device that is twenty kilograms heavier than you.