Exercise bicycles include mechanisms that provide the user with resistance necessary for exercise. These resistance mechanisms can be made of magnets, fans, or friction. Some exercise bikes enable the user to pedal backwards as well.
(Reuters Health) - Workouts that mix up a variety of intense exercises with brief recovery periods in between may help people lose more weight than chugging along at a steady pace on a treadmill or exercise bike, a research review suggests.
Reuters. Mon, 18 Feb 2019 15:41:29 -0500.