The dim LED light from your alarm clock signals to you from across the room. It reads two a.m. For the past three hours, you have been tossing and turning. Flipping the pillow over and over, closing and shutting windows, and contemplating the meaning of life. As humans, it is normal that we sleep at night and become active during the day time. Sleep is an essential part of our existence. However, there are always times when we..