Stair machine is a kind of fitness equipment that simulates climbing stairs, and it can achieve the effect of aerobic fat burning. When bodybuilders train on a stair machine with an inclination of 16% and a speed of 3 mph, they can achieve the training effect of a platform treadmill at a speed of 6 mph. This shows that bodybuilders can effectively increase their heart rate and achieve fat consumption without increasing their speed on the stair machine.