Why can people who can swim float on the water? Should you swim with an empty stomach or a full stomach?

With the development of swimming, swimming is divided into two categories: practical swimming and competitive swimming. Swimming is a skill that allows people to float upward under the buoyancy of water and make regular movements of the limbs through the buoyancy to make the body move regularly in the water. Should you swim on an empty stomach or on a full stomach? We are always unsure, which one is more suitable? You can open it to find out.

Contents of this article

1. Why can people who can swim float on the water?

2. Should you swim on an empty stomach or full stomach?

3. Do I have to wash my hair with shampoo after swimming?

Why can swimmers float on water?

People who can swim can float on the water because they tend to be relaxed in the water, control their waist, hips and legs, and try to keep them horizontal, so they can float on the water. However, beginners are afraid of water, so they tend to curl up their bodies, especially their legs, making it difficult for them to maintain balance and they will sink.

Swimming is a skill in which a person floats upward under the action of the buoyancy of water and uses the buoyancy to make the body move rhythmically in the water through the rhythmic movement of the limbs.

Swimming originated from ancient people who lived near rivers, lakes and seas. In order to survive, they had to catch water birds and fish in the water for food. They gradually learned to swim by observing and imitating the movements of fish, frogs and other animals swimming in the water.

With the development of swimming, swimming is divided into two categories: practical swimming and competitive swimming. Practical swimming is divided into sidestroke, diving, reverse breaststroke, treading water, rescue, and armed swimming, while competitive swimming is divided into breaststroke, crawl, backstroke, and butterfly stroke.

Should you swim on an empty stomach or full stomach?

It is not advisable to swim on an empty stomach or on a full stomach. Swimming on an empty stomach can easily cause hypoglycemia, which can easily make the swimmer feel dizzy and weak. When the stomach is full, the blood is more concentrated in the stomach. When swimming, the blood in the whole body will be forced to flow back to the limbs, so that less blood is supplied to the stomach, making it difficult to digest food, which will cause stomach discomfort.

It is also not suitable to swim after strenuous exercise. Swimming immediately after strenuous exercise will increase the burden on the heart: the body temperature will drop sharply, which will weaken the resistance.

It is advisable to choose small, easily digestible and high-energy foods. Drinking a small bag of milk or a glass of sugary drink, eating some chocolate, cheese, bread, biscuits or an energy bar 1-1.5 hours before swimming can help stabilize blood sugar levels. Stay in good condition.

It is advisable to do warm-up exercises before swimming. The water temperature is lower than body temperature. Therefore, you must do warm-up exercises before going into the water, otherwise it will easily cause physical discomfort.

Do I need to shampoo my hair after swimming?

Be sure to wash your hair with shampoo after swimming. After swimming, since there are usually a lot of bacteria in the swimming pool, and the water in the swimming pool is usually added with disinfectants and other chemicals, it is recommended to immediately rinse the skin with clean water and wash the hair with shampoo after swimming. In addition, you can apply moisturizer appropriately to keep the skin moisturized.

There is actually no fixed frequency for washing your hair, and washing your hair every day will not cause problems such as hair loss. As long as it suits your lifestyle habits, it is fine. Generally, oily hair requires a higher frequency of washing, while dry hair is recommended to be washed once every 3 days.

Shampoo should not be poured directly on the head, because shampoo is generally alkaline. If it comes into direct contact with the scalp or hair, it can easily damage them. Therefore, the best way is to make the shampoo into foam before using it.

It is best to use warm water when washing your hair, because high temperature will damage the hair scales and hair, and at the same time stimulate the hair follicles to secrete oil, causing severe oily scalp. Generally, the water temperature is relatively suitable between 36-43 degrees.