Many people shower in the morning to stay awake or in the evening to relax. But not all times are ideal forwashing hair, Life Times magazine said.
Experts say the following are the best times to avoid washing your hair.

Early morning, just after waking up

Yu Xinyan, deputy head of the Department of Traditional Medicine at the Civil Aviation General Hospital inDhina, said the traditional advice of avoiding morning showers has a scientific basis.
After waking, blood circulation is slow, and the body's organs need time to recover. Washing hair at this timestimulates blood vessels in the brain, which can raise blood pressure and increase the risk of dizziness and discomfort. Older adults and people with high blood pressure, heart disease, or weak health should avoid this habit.
In traditional medicine, the head gathers yang energy. Morning is when yang energy is formed, while water isyin. Showering too early can disrupt this energy flow and affect health.

On a full or empty stomach
After a large meal, blood concentrates in the digestive system. Washing hair at this time can redirect blood tohe head, causing bloating and indigestion.
When the stomach is empty, blood sugar is low. Showering can deplete energy and trigger hypoglycemia, withsymptoms such as dizziness, palpitations, and nausea. People with diabetes, high blood pressure, or heartonditions should not wash hair on an empty stomach.

When the body is exhausted
After physical or mental labor, the body needs rest before showering. Washing hair when extremely tired canreduce blood flow to the heart and brain and may cause fainting.
Wang Jingqing, head of the Neurology Department at the Nanjing Traditional Medicine Hospital in China,recommends washing hair during the dav when temperatures are stable or in the evening aiter meals, but notright before sleep.

Three common hair care mistakes
Experts sayimproper hair washing can also harm hair and scalp health
Showering infrequently to reduce oil: Lu Yuangang, head of Plastic Surgery at the Army MedicalUniversity in China, said washing less does not reduce oil production, as washing only cleans surface oil anddoes not increase sebum production. People with oily scalps should wash daily or every other day to preventclogged follicles that cause acne or hair loss. People with dry hair can wash every 2-3 days.
Scratching the scalp with nails: Fingernails carry bacteria, and scratching can injure the scalp and causefollicle inflammation. Instead, gently massage the scalp with fingertips in circular motions. The ideal water
temperature is around 4o degrees Celsius.
Sleeping with wet hair: A moist scalp lowers temperature and allows bacteria and fungus to grow,increasing the risk of headaches. Wet hair also breaks more easily from friction with the pillow. Hair should bedried before sleep, with the hair dryer 10-15 cm away from the scalp.