What happens when we sleep?
Every night almost everyone on the planet enters into a state of unconsciousness and paralysis. But what is really happening inside the body when we drift off? And what is the impact if we don't get enough sleep? Sleep is regulated by your circadian rhythm or body clock , located in the brain -at hypothalamus-. The body clock responds to the light cues ramping up production of the hormone melatonin at night and switching it off when it senses light
There are four stages of sleep that the body experiences in cycles throughout the night. On a good night we cycle through these stages four or five times.
Light Sleep Deep Sleep
*Stage 1 (Non Rapid Eye Movement) *Stage 3 (Delta Sleep)
*Stage 2 (Non Rapid Eye Movement *Stage 4 (Rapid Eye Movement Sleep)