WHY WE SLEEP
Scientists have proposed the following theories on why humans require sleep:
- Sleep may be a way of recharging the brain. The brain has a chance to shut down and repair neurons and to exercise important neuronal connections that might otherwise deteriorate due to lack of activity.
- Sleep gives the brain an opportunity to reorganise data to help find a solution to problems, process newly learned information and organise and archive memories.
- Sleep lowers a person's metabolic rate and energ