During the Day as You're Upright, the Dermal Fluid Moves Towards Your Legs, but Overnight, When Your Body Is Horizontal During Sleep, Dermal Fluid Settles...
During the day as you're upright, the dermal fluid moves towards your legs, but overnight, when your body is horizontal during sleep, dermal fluid settles back. This swells up your facial skin, reducing the appearance of wrinkles, like pumping water back into a raisin or rehydrating a shriveled, dried sponge.
Why do I look so different in the morning?
A combination of physiological changes that happen while we sleep, our chosen sleep position, and various environmental factors can all cause our faces to look puffy, discolored, textured or simply different in the mornings.
Waking early makes you look more attractive: Waking up early can help you improve appearance. Sleeping and waking late can make you feel and look more tired. Also, less sleep brings puffiness and dark circles around the eyes. According to the research, people who sleep and wake up early look fresh and beautiful.