Usually, spinning bikes wear knees more than aerobic bikes. Mainly when starting and riding at high speed, the pressure on the knee joint will be very great.
If you pedal at a frequency of not less than 50 revolutions per minute during exercise, your knees will not be worn too much. In other words, if you don't load too much damping, it won't hurt your knees.
There are many meridians on our feet, especially the soles of our feet, which are closely related to our body organs. Therefore, doing a good job in foot health