Hello, I'm a fitness instructor. I usually take cycling lessons. Spinning is a good aerobic exercise abroad, but it has changed its taste and become hostile at home. Those so-called coaches with poor cultural quality blindly pursue the so-called rhythm, showing their teeth on bicycles and misleading people. If you ride according to their method, you will lose your knee three times a week and two months. I have learned abroad that the correct riding should be a combination of urgency and slowness, with alternating standing and sitting positions. Please consult me for details.