No, and it will affect your health. For obese people, an appropriate increase in exercise can consume excess fat in the body, thus achieving the goal of losing weight. But after exercise, you will sweat a lot. If you don't replenish water in time, you will finish dehydration and even get heatstroke. It should be noted that if you sweat too much, you should not only replenish water in time, but also replenish light salt water, otherwise it will cause electrolyte imbalance in the body.