Can I swim in the dog days of summer? What is added to the blue water in the swimming pool?

When a person swims in the water, his arms paddle and his legs kick or push the water, which exercises all the muscles in the body. Swimming pools can be divided into ordinary swimming pools and heated swimming pools according to the water temperature, and also divided into indoor swimming pools and outdoor swimming pools. Can you swim in the dog days of summer? Encyclopedia knowledge will answer your questions.

Contents of this article

1. Can I swim during the dog days of summer?

2. What is added to make the water in the swimming pool blue?

3. How many meters is equivalent to running in one kilometer of swimming?

Can I swim during the dog days of summer?

You can swim in the dog days of summer. It is best to choose an indoor swimming pool to swim, which can prevent heatstroke and reduce body temperature, because the body dissipates heat in water 20 times faster than in the air. The heat generated by the body in water is less than the heat dissipated outside, which can have a good cooling effect.

It is best to wear swimming goggles with good sealing performance when swimming. You can put some eye drops after swimming. If your eyes have adverse symptoms such as itching and redness, it is best not to go swimming for the time being.

The swimming time should not exceed two hours. After getting ashore, you should rinse with clean water in time. After drying your body, apply some moisturizing skin care products, such as body lotion.

It is best to use swimming earplugs when swimming and use a nose clip to prevent choking. Cleaning the outer ear wax before swimming can effectively prevent pain and inflammation caused by soaking the ear wax.

What makes the water in the swimming pool blue?

Copper sulfate is added. Anhydrous copper sulfate is a white powder, but when dissolved in water, it forms a blue copper sulfate solution. Copper sulfate is added to the swimming pool because the presence of organic matter in the swimming pool will breed algae, and copper sulfate can inhibit the growth of algae and sterilize.

National standards stipulate that the copper sulfate added to swimming pools is 0.25~0.5 mg/L. Swimming pools are special places for swimming.

Swimming pools can be divided into general swimming pools and heated swimming pools according to the water temperature, and can also be divided into indoor swimming pools and outdoor swimming pools.

The official competition swimming pool is 50 meters long, at least 21 meters wide, and more than 1.8 meters deep. It is a swimming pool used for swimming, diving, and water polo, with a water depth of 1.3 to 3.5 meters.

How many meters is one kilometer of swimming equivalent to running?

Swimming one kilometer is equivalent to running four kilometers. Swimming is a whole-body exercise. Due to the buoyancy of water, it has a massage effect on the body, so swimming is deep fatigue, that is, fatigue lasts for a long time. Swimming consumes a lot of calories. The calories consumed by exercising in water are equivalent to 4 times that of land exercise.

Swimming one kilometer is equivalent to running four kilometers, because the thermal conductivity of water is 26 times greater than that of air. Under the same temperature, heat is lost in water more than 20 times faster than in air.

When a person swims in water, his arms paddle the water while his legs kick or push the water. All muscle groups in the body participate in the exercise, which can give the muscles of the whole body a good workout.

When swimming, it is recommended to do warm-up exercises on the shore before entering the water, warm up for 10 to 15 minutes, and move the joints and muscles of various parts. Otherwise, sudden and intense activities may easily cause muscle injuries or other accidents.