Sleeping is healthy and promotes children's development. Sleeping is particularly important for brain development, especially in the first year. There are essentially three different types of sleep: active sleep (REM sleep or dream sleep in adults), calm sleep (deep sleep), and another type of sleep that describes the transition between these two forms.
A rapid change between active sleep and deep sleep is characteristic of babies. During active sleep, babies process what they have learned during the day. In this phase, they can twitch or smile and make faces, often making noises. The calm sleep phase serves to process memories. In this phase, babies are often extremely relaxed.
Since every child is different, babies' sleeping behavior is also very different. While newborns (especially in the first 3 months) sleep 16 to 20 hours, the sleep cycle adapts more or less slowly in the first 3 to 6 months of life to predominantly night-time sleep.
Sleep is not just healthy and good, but it also has a positive influence on the child's cognitive, social, and physical development. When children sleep after learning something new, they are better able to remember what they learned. Behavioral learning is also strengthened, as in the ability to deal with feelings and perceptions. Only a relaxed baby is a happy baby. Rested children and babies who sleep well usually have a calmer temperament. Calm deep sleep is also particularly important for the newborn's immune system to develop fully.