Varies. If you sleep well and long enough (8 hrs) to attain deep sleep, your body has the opportunity to recouperate and release all the good hormones we depend on.Also. Your muscles will relax and rest.The skin is not stretched or contorted, as it is when you are awake.These things contribute to overall health and also affect your muscle tone. All of which can result in a fresher, toned, healthy appearance.
Replaces old cells. Lack of sleep can cause the delicate skin around the eyes to become puffy and thin out, develop dark circles, cause lines and wrinkles. The body and skin need sleep to restore energy, heal and repair itself, rebuild tissue and cells. Proper sleep restores proper blood supply and replaces old cells with new which makes skin glow and appear rosey.