Why do people who can't swim sink in the water?

People who can't swim will sink after entering the water, mainly because of tight muscle contraction, resulting in higher density.

1. Why do people who can't swim quickly sink into the water? Because its action is sinking. People's daily body movements tend to rise horizontally and fall vertically because they need vertical support; The situation in water only needs horizontal downward pressure and vertical upward lifting, because downward pressure increases downward force and upward pressure decreases upward force. After ordinary people fall into the water, they subconsciously push their feet down, press their hands down, and then raise their hands and lift their feet as usual to accelerate the sinking.

2. There seems to be no movement when floating, but in fact it is necessary to maintain a certain balance. Is to control your muscles and keep your body level. To make it easier to understand, you can give a counterexample.

We have to get rid of the floating state without paddling, only our legs curl up or move to the bottom of the pool. Once the legs move to the bottom of the pool, the lower body will gradually tilt and finally stand up under the action of water. Therefore, if you want to float, the key is to control your waist, hips and legs and try to keep them level.