First of all, alcohol affects the fitness effect. During exercise, the human body uses glucose stored in the liver as fuel. The problem is that after drinking, alcohol is also metabolized through your liver, which means that drinking will inhibit the efficiency of glucose burning. So you can't get the energy you deserve for fitness, and the fitness effect will be greatly reduced.

In addition, alcohol will dehydrate your body, which requires more water and body fluids when you exercise. If you start exercising after drinking a glass of wine or beer, you will only be more short of water. Not only is it dangerous, but it will also reduce your physical fitness level.

Finally, drinking and exercising may put you at risk of injury. Reason: The body is in a "burning" state during exercise, and alcohol itself is an accelerant. The double effect means that you are more vulnerable.