What about washing your hair with cold water?

Because washing your hair with cold water will cause blood vessels to contract and your body temperature to drop. After you catch a cold, your body's resistance drops, and many bacteria and viruses will take advantage of it, leading to diseases such as upper respiratory tract infection. Washing your hair with cold water in cold winter is easy to cause chilblain and other diseases because the blood vessels of your body contract after being stimulated.

Wash your hair with cold water often, because the cold water temperature is low, which can also lead to neck pain and stiffness. Especially for people who often work at their desks, it is very important to wash their hair with hot water, otherwise it will easily increase the probability of cervical spondylosis. In addition, washing your hair with cold water often leads to headaches. Because the human nervous system will be highly nervous after being stimulated by the outside world, it will produce stress pain. Washing your hair with cold water all the year round can cause persistent headaches. Always washing your hair with cold water can also lead to excessive water in your body. People with heavy moisture are weak, often cold hands and feet, and are prone to various problems.