Has your mother ever nagged you as a kid, telling you to splash water on your face when you wake up in the morning? My Eastern European mother has. She always used to tell me that it would help rejuvenate me and wake me up. I did it begrudgingly, even when I questioned whether or not it actually did anything. However, sometimes it does indeed just feel good to have that sharp sensation of cold water hitting you. It can make you feel more alert and allow you to maintain focus; or, it can relax you and allow you to stay calm.