Sleep is a state in which we are alive and unconscious where our brain is very active and it is said to be dynamic. Sleep is said to be the necessary part of our life. It makes ourself healthy by maintaining the homeostasis of the body function. Sleep is hypothesized to have an important role in memory consolidation. The REM and SWS sleep has its impact on memory formation and consolidation in most tasks like visual discrimination, verbal learning, motor tasks and so on. A survey was made among the college and school students about their memory and their duration of sleep. Here we found that goodness of memory is dependent on sleep duration. Sleep with 8 hours duration seems to facilitate declarative memory. So here we like to state that 8 hours of sleep is necessary for a better memory. Thus sleep is a natural medicine for boosting up the memory formation and consolidation.
