Washing your hair with cold water makes your neck feel like it's stiff

In most cases, most people wash their hair with warm water, but some people like to wash their hair with cold water. It is best not to recommend washing your hair with cold water. Washing your hair with cold water is not good for human health. It is easy for moisture to invade the human body and cause headaches. Some people experience neck pain after washing their hair, as if they had a stiff neck. In this case, most of the time it is caused by cervical spondylosis. To prevent cervical spondylosis, you must develop good living habits in your daily life.

During the hot summer, the temperature in many places reaches over 35 degrees, and even reaches 40 degrees in some places. In the hot summer, some people like to wash their hair with cold water in order to keep cool. In addition, some people who need to work overtime are accustomed to washing their heads with cold water to refresh themselves in order to drive away sleepiness. Although washing your hair with cold water can temporarily relieve heat and drive away sleepiness, it can also cause great harm to your health.

When the temperature is high, part of a person's heat needs to be dissipated through the head, so the blood vessels expand significantly more than usual and the pores enlarge. If you wash your hair with cold water at this time, the head will be stimulated by the cold water, which will cause the blood vessels on the skin surface to suddenly contract through nerve reflex, and the pores will quickly close, causing the heat in the body to be unable to be dissipated smoothly, and the heat-relief effect will be greatly reduced. At the same time, the human head suddenly enters a cold environment from a hot environment, and there is a lack of transition, which can easily cause diseases such as colds. In fact, after sweating in the summer, it is best to drink some salt water first, wipe off the sweat, rest for a while, and then wash your hair or take a bath with warm water to have a better effect in cooling down.

When a person feels sleepy, it is due to body fatigue and insufficient blood supply to the brain. It is a self-protective inhibitory reaction of the brain, which in itself is a signal that the body is extremely tired and needs rest. If you do not rest at this time and instead use cold water to wash your hair, it will cause a sudden stimulation to the brain and nerves, causing the blood vessels in the head to contract sharply. In this way, although we have achieved the purpose of refreshing, it will also cause great damage to brain cells and nervous system. This will lead to excessive cell consumption and cause decreased brain function, and the excitement and regulation of nerves will also be disordered, causing headaches, dizziness, black spots in front of the eyes and other discomfort symptoms. It may even cause thrombosis due to the violent contraction of cerebral blood vessels.

When the human body feels sleepy, it should rest in time to replenish physical and mental strength, which is conducive to improving work efficiency. Try not to work in a tired state, and do not use cold water to wash your hair to refresh yourself. If you really need to refresh yourself, you can drink a cup of coffee or apply a towel dipped in hot water to your face for a few minutes. This will also have a good refreshing effect and will not harm your health.