Views: 16 Author: Site Editor Publish Time: 2020-11-20 Origin: Site
01 Avoid swimming on an empty stomach.
Due to the low blood sugar of the body, it is particularly easy to experience muscle tremor, dizziness, collapse, coma, and even collapse and cause drowning in the water.
Do not swim on an empty stomach. Before swimming, swimmers should add some fruits, milk, candy and other foods before swimming.
02 Avoid swimming after strenuous exercise
Swimming immediately after strenuous exercise will increase the burden on the heart. During strenuous exercise, the body produces more heat, the body temperature rises, and the skin sweat glands and subcutaneous blood vessels dilate. If you jump into cold water suddenly and your body temperature drops sharply, the blood vessels under your skin will shrink sharply and your sweat pores will be blocked, which can easily lead to colds and acute joint pain. In severe cases, it can lead to paralysis of the limbs.
After strenuous exercise, rest for half an hour and wait for the sweat to fall before going swimming.
03 Swimming after drinking
Hypoglycemia occurs when a large amount of glucose stored in the body is consumed after drinking. Alcohol can interfere with the rhythm of excitement and inhibition in the cerebral cortex, and the mind will be dizzy and affect the ability to judge water conditions. These factors undoubtedly increase the chance of swimming accidents.
Please take drunk swimming as the same as drunk driving.
04 Avoid swimming after a meal
Swimming when you are full after a meal not only affects the digestion and absorption of food in the gastrointestinal tract, but also easily causes stomach cramps, vomiting, and abdominal pain.
After a meal, rest for 30 minutes to an hour before swimming in the water.
05 Avoid swimming during menstruation
During menstruation, women's body resistance decreases. If they go swimming and are stimulated by cold water, they will easily lead to irregular menstruation, excessive menstruation, prolonged menstruation, and dysmenorrhea. Germs can also cause infections of the genitourinary system.
06 Avoid swimming in unfamiliar waters
If you are traveling in the summer and are not familiar with the surrounding environment and underwater conditions in natural waters, you should avoid swimming rashly to avoid accidents.
Remember not to swim in non-swimming areas.
07 Avoid eating immediately after swimming
It is advisable to rest for a while before eating after swimming, otherwise it will suddenly increase the burden on the gastrointestinal tract and cause gastrointestinal diseases over time.
After swimming, you can take a shower and eat after a rest.
08 Avoid swimming without warm-up
Water temperature is usually lower than body temperature. Therefore, you must do preparation activities before entering the water, otherwise it will easily cause physical discomfort.
09 Avoid traveling too long
The duration of swimming should generally not exceed 1.5 to 2 hours, which is determined by the three reaction periods of the skin to cold stimulation:
The first stage: After entering the water, the skin's blood vessels contract and the complexion becomes pale after being stimulated by cold.
Phase 2: After staying in the water for a certain period of time, the blood flow on the body surface expands, the skin turns from pale to light red, and the skin body changes from cold to warm.
The third stage: Staying for too long, the body temperature heat dissipation is greater than the heat, and the skin appears goose bumps and chills.
This is the taboo period for summer travel, and water should be released in time.
10 Avoid neglecting hygiene after swimming
After swimming, germs are easy to remain on the skin, coupled with the common chlorine disinfection of swimming pools, it is easy to irritate the skin.
It is best to take a serious bath with a nourishing body wash after swimming.