For people who are used to drinking drinks for breakfast, fruit juice that can supplement vitamins in large quantities is a choice that cannot be ignored. Citrus fruits, such as oranges, kiwis or grapefruit, are rich in vitamin C. Besides enhancing the immune system and resisting oxidation, they are also natural "refreshing drugs". It is worth noting that freshly squeezed juice should take precedence over boxed juice with high sugar and low vitamins produced by assembly line. It is not enough to drink fruit juice for breakfast, but also to have bread and butter or cereal; Sweet and crisp bread that takes a long time to digest and is easy to make the body tired should be avoided.

To refresh oneself by exercising.

If you can't sleep, or you need to burn your brain during fatigue, then the best way to refresh yourself is exercise. For example, getting up early and feeling groggy, doing some aerobic exercise, running outdoors and climbing stairs will give you the same refreshing effect as drinking coffee. Some people even climb the stairs for 15 minutes in the afternoon when they are easily tired, or take a brisk walk outdoors to refresh themselves.

3. Functional drinks

Functional drinks contain a variety of nutrients, including vitamins, lysine, taurine, inositol and caffeine, and have the function of refreshing. Functional drinks contain a variety of nutrients and caffeine, so they are often used as refreshing and even fitness drinks.

4. Open your mouth when yawning

The brain is the most sensitive organ to fatigue. When people are tired, the brain will be in a state of hypoxia. At this time, the brain will issue instructions to make people yawn a few times, inhale more oxygen, and relieve the brain from hypoxia. Clinical studies have found that the amount of oxygen inhaled by yawning is five times that inhaled by normal breathing. Therefore, office workers should force themselves to yawn a few times when they feel tired, and every time they yawn, they must try to open their mouths as wide as possible and inhale more oxygen. This can improve the hypoxia state of the brain and make brain cells active again.

5. cereals

It has been created that if the fiber content in breakfast is high, there will be no feeling that the large intestine tells the small intestine. Nutritionists explain that fiber can slow down digestion, continuously supply carbohydrates to blood vessels, and make the human body gain energy continuously. Oatmeal is a kind of food rich in fiber, and its energy release is slow and balanced, which can keep the blood sugar level of human body at a high level all the time, so it will not be considered as hungry and energetic soon.