The precautions for using ellipsis are:

1. Don't step back. In the past, many people thought that when moving backwards on the elliptical machine, they could make more use of their hips. In fact, the two directions are mainly aimed at your thighs, and when you move backwards, the pressure on the knee joint will increase, which will have a bad influence on the ligaments and tendons of the knee joint for a long time.

2. Try not to let the soles of your feet leave the pedal. There are many moving parts on the ellipsometer. If your foot leaves the pedal, it may cause unnecessary injury and is not conducive to your balance.

3. Some ellipsometers can not only adjust the resistance, but also adjust the slope, and try different angles, which is helpful to increase the interest.