Office worker, spring sleep, coffee.

As soon as we enter March and April, many people feel sleepy very easily. Even after taking a nap, they still feel drowsy and can't lift their spirits. It's not easy to wake up in the morning. This is the so-called "spring sleepy" phenomenon. It is not inexplicable that "spring is good to sleep and unwittingly dawn". This phenomenon is related to the fact that the physiological function of the human body is temporarily unable to adapt to seasonal changes, and the change of brain blood flow is a natural response of the human body to seasonal changes.

In winter, due to the cold stimulation of the human body, the skin capillaries of the whole body are in a state of contraction and the blood flow is reduced to reduce the heat loss when the blood flows through the body surface, which plays an important role in maintaining the normal body temperature. As the blood flow on the body surface decreases, the amount of blood flowing to the internal organs increases relatively; in spring, when the temperature rises, the blood vessels of the skin dilate gradually, the blood flow increases greatly, and the sweat glands and pores open with it. At this time, the total amount of blood in the human body is relatively stable, so the blood supplied to the internal organs, including the brain, will be relatively reduced. And the brain in the long winter has been accustomed to "sufficient oxygen" state of work, all of a sudden can not adapt, cerebral cortex activity has been inhibited. Coupled with the warm climate and high humidity in spring, it has a good calming and hypnotic effect on the cerebral cortex of the human body, making people feel sleepy and sleepy.

Starting from the Beginning of Spring, people's yang gradually grew. Under normal circumstances, the human body is in a dynamic balance of qi, blood, yin and yang. Yang Qi in spring is on the outside and empty in the inside, so it is said that Yang should be nourished in spring and summer. Sleepiness in spring is not a disease, but it suggests that the human body has sub-health signals that need to be paid attention to. In addition to its own function, "spring sleepiness" is also related to weather, work, diet, sleep, exercise disharmony and other factors. Eating too much hot food or being in an air-conditioned environment for a long time will aggravate "spring sleepiness". Persistent "spring sleepiness" means that the body may have adverse symptoms such as lung yin deficiency, lung dryness and heat, phlegm-dampness, liver yang hyperactivity, liver and kidney yin deficiency and so on.

If you want to eliminate "spring sleepiness", actively participate in physical exercise and recreational activities can promote blood circulation and enhance the regulatory ability of the cerebral cortex. In terms of dietary conditioning, eat a full breakfast to ensure the supply of energy, and eat more vitamin-rich fruits and vegetables and alkaline food. In addition, "office workers" can drink tea, coffee or chocolate appropriately when they are sleepy, so as to excite nerves and eliminate fatigue.

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