The towel can be tied to your wrist or put aside when it is not wet. Glass thermos cups are not recommended for fitness. If you don't pay attention to the front row, you will hurt people. If you are used to drinking boiled water, you can use a large-capacity frosted black stainless steel cup, and it is better to drink a small amount of sports drinks or water before exercise. Supplementing some salt water after exercise can help replenish inorganic salts lost by the human body, thus relieving fatigue.