Many people habitually shower before bed, sleeping with wet hair and the air conditioner running. Waking up the next day, they often feel headaches and fatigue. This occurs because human yang energy is weakest at midnight, making the body prone to exhaustion and less resistant to illness.
Washing hair before bed traps moisture on the scalp. Over time, this can lead to stagnant qi and blood, obstructing meridians. Furthermore, sleeping in an air-conditioned room with hair still wet exposes the head to cold air, combining cold and dampness to cause illness. Many people experience scalp numbness and pain in the middle of the night. Persistence can even trigger subcutaneous venous plexus inflammation.
Many office workers leave home early and must shower at night. In such cases, hair should be thoroughly dried with a hairdryer before bed. Sleeping with wet hair at night poses significant risks. The body enters a relaxed state with slowed metabolism, lowering resistance and making one susceptible to chills. This can lead to headaches, abdominal pain, diarrhea, indigestion, and joint discomfort.
Adjust hair washing frequency based on individual needs.
Sebaceous glands in the scalp and hair follicles continuously produce natural oils that protect and lubricate the scalp and hair. Overwashing strips away this protective layer, leaving the scalp and hair dry and prone to split ends.
Daily hair washing isn't necessary; frequency varies by individual. Generally, washing 2-3 times weekly is sufficient. Those frequently exposed to outdoor environments with heavy smoke or dust may increase frequency. Individuals who rarely go out and have non-oily hair can wash just once a week.
Proper washing posture is crucial
The way you wash your hair matters. Many people prefer bending forward with hair hanging down. However, prolonged head-down positioning impairs blood circulation, reducing blood flow to the brain and hindering hair growth. Therefore, an upright posture during showering is more suitable, allowing your body to adjust to the most comfortable position.If you experience pain, numbness, or dizziness in any area, it indicates potential pressure on blood vessels or nerves, and you should adjust your posture promptly.
Getting a shampoo at a salon is a treat for many, but public washing stations are crowded and busy, and shampooing tools inevitably harbor bacteria and germs. Those with sensitive skin or allergies to shampoo fragrances should exercise caution. Additionally, salon shampoos typically involve reclining on your back.
However, this position isn't suitable for everyone. Lying back places pressure on the vertebral arteries in the head, directly affecting blood flow to the brain. Prolonged exposure can lead to insufficient cerebral blood supply, causing symptoms like dizziness, nausea, and unsteadiness. Elderly individuals, those with hypertension, or cervical spondylosis should especially avoid washing their hair in this position, as it may trigger vertigo, temporary brain hypoxia, or even stroke.