• Variable controls so you can adjust your speed and resistance manually. Safety tip: Skip straps on foot pedals because they encourage the use of the wrong leg muscles. Also, if you lose balance, you can’t put your foot on the ground fast enough to prevent a fall. Safety tip: Adjust the seat to the right height so when you extend your leg forward, there should be a slight bend in your knee. Ask a physical therapist or trainer to help you the first time.