Sleep three beauty sleeps, sleep back to youth.

In the life of a person, about 1/3 of the time is spent sleeping. A good night's sleep will make people feel refreshed and full of energy; otherwise, they may feel listless and distracted. For women, sleep is not only closely related to health but also plays a key role in beauty and skin care. Choosing the best time for sleep and forming reasonable sleeping habits often brings twice the result with half the effort. Sleep quality is also affected by mental state at the time of falling asleep. If you think about distressing things before going to bed or focus on detoxification for health, it can lower sleep quality. American researchers have found that when couples have disagreements during the day, both parties often experience poor sleep quality at night. Conversely, if couples don't sleep well at night, their relationship the next day will also be affected.

**Beauty Sleep**

The "beauty sleep" period is from 10 p.m. to 2 a.m. Studies show that from midnight to 2 a.m., the metabolism of epidermal cells is most active, and skin cells regenerate while the skin adjusts itself. Staying up late during this time can affect the speed of cell regeneration, leading to skin aging. Therefore, getting "beauty sleep" is very effective for maintaining tender facial skin and surpasses many high-end skincare products.

**Zi-Wu Sleep**

"Zi-Wu sleep" refers to sleep during the Zi (11 p.m. to 1 a.m.) and Wu (11 a.m. to 1 p.m.) periods. According to the sleep theory of *The Yellow Emperor's Inner Canon*, the Yin energy is strongest and Yang energy weakest during the Zi period, making sleep most effective and of the highest quality. During the Wu period, Yang energy is strongest and Yin energy weakest, so one should also take a nap then. However, a half-hour nap is sufficient as it might otherwise affect nighttime sleep. Getting more Zi-Wu sleep is indeed a good way to maintain health.

**Second Sleep**

When waking up in the morning, the brain doesn’t immediately enter a normal excited state but transitions from an inhibited state to an excited state. If you suddenly wake up and force yourself to get up, you may often feel dizzy, have headaches, or experience unstable blood pressure. After waking up in the morning, you can take a "second sleep" to allow the brain's neural activity to readjust, ultimately making you fully awake.

Therefore, under permitted conditions, even if you've already gotten up and done some things in the morning but still feel very sleepy, you can take a "second sleep" to ensure you're energetic throughout the day.

She-Life Women's Network (http://www.she-live.com) follows the principle of "Love Life, Love Beauty" and provides netizens with the latest, fastest, and most comprehensive women's information on fashion, beauty, personalities, and lifestyle consumption, striving to create a professional women's fashion portal website.

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