Although it is said that the sun in spring is the best tonic, sunbathing is also a "technical activity", because if sunbathing is not enough, the effect will not be achieved, and if it is excessive, problems may occur, so choosing the right time and place can achieve the effect.
Sunbathing is best in the morning 10, at 4 pm.
At this time, the sun has strong infrared rays and weak ultraviolet rays, which can promote metabolism and avoid hurting the skin; At 4-5 pm, there are many X-ray components in ultraviolet rays, which can promote calcium and phosphorus absorption, enhance physical fitness and promote normal calcification of bones. Note that the sunshine shall not exceed 1 hour at a time.
Don't sunbathe through the glass.
Studies have shown that less than 50% of ultraviolet rays pass through the glass, and less than 2% are 4 meters away from the window. So sunbathing through the glass actually has no effect.
You should choose to sunbathe in some parks with better greening and fresh air, or sunbathe on the balcony.
Hands, feet, legs and back are drier. Dry hands, feet and legs can well dispel the cold of joints and legs, accelerate the absorption of calcium and make the bones of hands and feet stronger; Sun-drying the back can dispel the cold of the spleen and stomach, help improve digestive function, dredge the back meridians, and be beneficial to the heart and lungs; Regular palm drying can relieve fatigue and promote sleep.
You'd better wear red.
Don't wear white clothes, especially in summer with strong ultraviolet rays. White clothes will reflect ultraviolet rays on the face or bare arms, which will hurt the skin.
It is best to wear red clothes, because the long-wave radiation of red clothes can quickly "eat" the short-wave ultraviolet rays with strong lethality.
Don't wear a hat, or you will block out the sun and lose the meaning of sunbathing. If you are afraid of strong light, you can wear sunglasses.
Children shouldn't stay in the sun for a long time.
Within half an hour at a time, you can feed your baby cod liver oil before drying.
Babies under 3 years old are too low off the ground when placed in a stroller, and there are many sunlight reflections. It's time to pick them up and dry them. If your skin turns red, you sweat too much and your pulse speeds up, you should go home immediately and give you a cool drink or light salt water.
It is not advisable to eat sensitive food before sunbathing.
Mustard, purslane, Malantou and fig should not be eaten, so as not to cause photosensitive drug eruption or solar dermatitis.
Drinking more water, eating more fruits and vegetables and supplementing vitamin C after exposure can inhibit the production of melanin.
The picture comes from the internet.