Super Serenity Sleepers

Sleep is defined as a state when the motor activity and senses are

suspended; there is partial or total unconsciousness, and the

voluntary muscles of the body are not active. It is more reversible

than coma or hibernation, yet responds less to any kind of stimulus

than silent wakefulness. Sleep is very important, as it is the rest cycle

of the body. Get all the info you need here.