Question

What happens when we walk or play in the hot sun?

Answer 1

• When we walk or play in the sun, we get tired, but at the same time our skin. becomes wet. This is because of sweat. In the skin, there are glands which secrete sweat.
• They are called sweat glands. After playing in the hot sun or after hard physical labour, the temperature of the body rises. 
• Then sweat is released. It helps to reduce the temperature of the body. Our body temperature usually remains constant at approximately 37°C.