1, metal cup, you can also bring a metal cup when you exercise. Metal cups are usually insulated because metal conducts heat faster to prevent burns. Drinking water from a metal cup is actually good for your health, mainly because metal elements are good for your health. When going to the gym, the metal cup is actually more difficult to carry, because there will always be some bumps when going out, and the metal cup is not easy to be damaged.

2, non-toxic plastic, the most bought in supermarkets on the market should be non-toxic plastic cups. In fact, fitness can also bring non-toxic plastic cups, because plastic cups are relatively portable and not as easily broken as glasses. But even if the plastic cup is non-toxic, drinking water is not heat-resistant.