Sleeping: the little train of sleep
Sleep is made up of a succession of small trains that we
take on a journey
Each small train corresponds to a sleep cycle and is made up of several wagons which represent the different stages of sleep.
The length of trains (ie the duration of cycles) but also their composition, varies from age to age: for the newborn, each train
is made up of 2 wagons (1 waggon sleep wagon and a sleep wagon while in the adult, each train has 5 (2 wagons of light
slow sleep, 2 deep slow sleep wagons, 1 rapid eye movement sleep wagon).
From birth to 2 months
The trains are short and numerous, and
traveling (sleeping periods
including one or more trains)
spread throughout the 24
hours. Baby begins his journey
by restless sleep and pursues him by
calm sleep. After 50 minutes,
between 2 trains, the baby is everything
near the awakening, in a period of
intermediate sleep (very sleep
From 2 to 6/9 months
Trains are longer (70 minutes about).
The restless sleep becomes, from 2 months,
rapid eye movement sleep comparable to
that of the adult (dream sleep).
The quiet sleep wagon is
transforms into 2 sleep wagons slow.
The journeys become
gradually longer at night (12
hours on average, 10 to 12 trains).
During the day, trips are shorter and are interspersed with more and more long awakenings.
Agitated sleep (rapid eye movement sleep equivalent of the adult)
The baby’s face is animated by small movements, his breathing is irregular, the activity of
his brain is intense. He may have bodily movements during which he becomes
red, stretches, growls. Sometimes he can open his eyes for a moment. It lasts a few
seconds to 1 to 2 minutes and it calms down.
Quiet sleep (equivalent to slow sleep)
The baby is still, his eyes are closed without eye movements, his face is relaxed.
Sometimes he has periodic sucking movements. His breathing is calm and regular.
Keywords : sleep / little train of sleep / baby / baby rhythm