Rejecting the sun will make people feel tired, depressed, unable to get up in the morning, and even eager to escape from all social contacts.

Sunlight is a natural irritant. The best way to refresh yourself is to take a walk, jog or ride a bike for half an hour in the morning. Don't wear dark sunglasses, so as not to hinder your body's absorption of sunlight.

Proper sun exposure is good for health, because the body can store a lot of vitamin D for emergencies, which helps to maintain the strength of bones and teeth. Sunlight can promote the activity of cholesterol in the skin and convert it into vitamin D. The human body needs quantitative vitamin D to absorb calcium.

However, in outdoor activities, it is not appropriate to overexpose, and sunscreen can be used.