It is usual for babies to cry sometimes when they are sleeping. This is because babies need to expel a lot of energy when they play. As babies grow, their sleep becomes more consistent and less fragmented.
Parents know that babies can be very stubborn when sleeping since babies tend to choose when they want or do not want to sleep. Baby’s supply of energy keeps them from going sleeping anytime, so babies usually win the fight with parents on going sleeping time.
Why do babies cry in their sleep?
1. Sleeping while being in a position experienced while awake
– It can be uncomfortable sleeping with the arms stretched out to both sides of the body, just as if one were sitting on a chair. In that case, it would seem natural to cry when waking up.
2. Regaining consciousness after forgetting about being asleep
– Babies often continue to sleep even when they should have been woken up by hunger or coldness, etc., and may have forgotten what it is like to be awake and must reawaken their consciousness. Usually, this happens when babies are over 1 year old and only occurs once every seven days; but sometimes it happens many times throughout the night, causing them not to get enough sleep at night, which might be why they cry so frequently.
3. A new environment causes the child to be awoken
– Babies who are used to sleeping on their bellies can be awakened if placed on their backs, for example, but may not know how to get back into the stomach-down position and will start crying as a result.
4. Expression of discomfort caused by maturing consciousness
Babies usually don’t have any likes or dislikes; however, when they grow older and develop more emotions, they become picky about some things like food or clothing or may experience feelings of dislike for something. These changes in their minds also bring about changes in behavior (like becoming restless). Since babies can’t explain what is happening inside them very well with words, they express those changes in their attitudes with crying.
5. A natural reaction to a sense of hunger or coldness
– When infants are hungry or feel cold, they rarely cry out right away; instead, they usually try to suck on something before crying for help. However, if the feeling of discomfort is too strong – such as when it’s freezing outside – they may start crying immediately, even without trying to find a nipple or blanket. In this case, parents should look into why the baby is uncomfortable and do what must be done to solve the problem before it becomes chronic quickly.
6. Crying from fright over various everyday occurrences
– Babies apparently become frightened by many things that they would never think twice about: noises, shadows, the sudden opening of a closet door, etc. Such fears may be caused by changes in their environment or in their own bodies that they don’t yet fully understand, but since they can’t express themselves very well with words, they cry to express what’s upsetting them.
7. A baby cries when it feels lonely
– Babies need physical contact with adults because it makes them feel safe and secure; therefore, if they are left alone for even a short time without someone nearby, they might start crying out of fear or loneliness. When babies feel lonely, not only do they cry but also turn to look over both shoulders repeatedly (which is called “shibagami” in Japanese) as if someone was about to appear then.
8. Crying to express desire or wish
– If babies want something, they may start crying even before the adults around them realize it; for example, they may cry out of hunger while still sucking on a nipple or cry when they are lonely even though someone is nearby. It is thought that this type of crying is related to emotions like wanting something badly enough to make oneself suffer in order to get it.
9. Crying due to physical discomfort
– Babies don’t sweat much yet and are generally not very good at regulating their body temperatures; therefore, if their bodies feel cold or hot, they will show discomfort by crying. Also, if placed on their backs, babies often awaken because there’s not enough support to keep their bodies in a stomach-down position; and they also start crying.
10. Crying to express strong feelings of anger, displeasure, or hate toward someone
– Babies may start crying out of anger when something doesn’t go their way or when they are scolded for doing something wrong, or they might shed tears in order to get adults to pay attention to them because they feel neglected. It is also thought that this type of crying stems from the baby’s desire not simply to get their feelings across but actually make another person feel guilty by making them suffer emotionally.
Babies cry when sleeping. It is a fact babies cry when they are sleeping for two reasons: first, babies’ bodies need more oxygen than adults and thus babies tend to breathe faster and babies’ breathing patterns change during sleep.
The rate of babies’ heartbeats also changes during sleep, altering the number of red blood cells that carry oxygen around the body. This proves that babies need more oxygen than grownups do.
Babies may wake up because they miss their mother’s warm cuddles; some babies may want to be rocked back to sleep as many conditions (if not all) as an adult does or even more often as babies cannot speak and tell what bothers them most as adults do.
Sleeping babies may also cry for medical reasons such as colds and fever, allergies, teeth pain, and teething. Also, babies’ sleep patterns change during the first few months after birth. They sleep for shorter periods and wake more often than they will do when they grow up.
A baby needs to be heard while sleeping, so parents must check on their babies and see how babies behave while sleeping so babies can get enough rest at night; babies need to sleep more than adults do to grow correctly.