Category
🗞
NewsTranscription
00:00How long does a sleep cycle last?
00:03Sleep is made up of several successive periods, which last between 60 and 120 minutes each.
00:08For a reparatory night's rest, it is recommended to sleep on 3 to 5 cycles.
00:13Every night, it's the same sequence that comes up.
00:16There is first the phase of light sleep, a few-minute sleep that can be disturbed by the slightest noise.
00:22Then follow the periods of slow sleep and paradoxical sleep.
00:26Slow sleep is characterized by specific waves.
00:29They lead to a gradual decrease in brain activity.
00:33Paradoxical sleep, on the other hand, is translated by a low oxygen consumption
00:38and by brain activity close to the awakening phase.
00:41It is often at this moment that dreams appear.