1, which is harmful to the knee joint, especially when riding fast. Long-term use will cause joint pain and reduce joint stability.

2. With the increase of resistance, it is possible to increase thigh muscles and make thighs thicker.

3. The seat of spinning bike has a bad influence on the private parts of human body, and long-term use may reduce sexual function and sexual desire.

4. Spinning classes are usually held in discos with a high volume, and staying in spinning classes for a long time has a bad influence on listening.

5. The spinning room is generally not very big, but the bicycle density is generally high. If the ventilation is not good, it is not conducive to human health.

Only the correct use of spinning bike can avoid the above injuries. Bicycles don't need electricity and magnetism, just like our usual bicycles, they are just fixed and can adjust different resistances.

Cycling consumes more calories than running, and it doesn't hurt your knees like running, which is very suitable for reducing fat. If girls practice, I suggest not to use big resistance, just small resistance, and exercise for a long time. If the resistance increases, the muscles on the legs will be more developed, which is equivalent to anaerobic training of the legs.