A hybrid treadmill is simply a treadmill that is designed to serve at least one other purpose. A treadmill is one of the most popular cardio exercise machines which provides users with numerous benefits like improved cardiovascular health, toned muscles, and increased fat burn. An elliptical is a cardio machine that has two foot-pedals and handles for users to hold onto while they work out on the device. A stepper is another popular workout equipment that simulates stair climbing without excessive strain on the joints. A manual treadmill is a piece of workout equipment that requires you to manually push the machine in order for it to move. A hybrid treadmill is usually a treadmill that is also a stepper or elliptical, sometimes both. A hybrid treadmill may also refer to a treadmill that is both motorized and can run as a manual treadmill or a treadmill that could double up as a desk so you can walk as you work. In this way, it is important to make sure what kind of hybrid you are buying so you don't end up with a treadmill that isn't as you would expect.