Sleep can also affect skin health
The skin is the body’s largest organ, the surface area of about 2 square meters. Throughout the thickness of the skin of the body are not exactly the same. The thinnest skin of the eyelid, and only 0.05 mm thick; skin palms and soles of the feet at the thickest, is 1.5 mm. Skin Weight great. Weight accounted for about 16 percent of skin weight. Skin is composed of a multilayer structure. Skin is divided into three layers, namely the epidermis, dermis and subcutaneous tissue. The subcutaneous tissue is the innermost layer, which consists of collagen and fat cells. The dermis is the middle of the floor, accounting for 90% of the total skin thickness. The epidermis is the outermost layer, which is a barrier between the body and the external environment. Skin cell renewal soon. The number of skin cells per minute off the body reaches 3 to 40000. Skin can regulate body temperature. When the temperature is too high, blood vessels will expand, so it is easy to allow the heat to be released through the skin; when the body cools, blood vessels will shrink, the skin can save lives calories. Sleep can affect the skin. Buried her face in the pillow to sleep can cause wrinkle formation.