In most bars, a cup of boiled water costs 4 yuan, but peanuts are free, because if you drink boiled water, it will reduce the possibility of buying other drinks, while if you eat peanuts, you will probably go back and buy other drinks, so boiled water costs money, but peanuts don't.

Similarly, if there is no water dispenser in the health club, you have to buy other drinks to quench your thirst, and the health club will increase part of the beverage income. So there is no water dispenser.