Night awakenings in infants

Night awakenings in infants: Why is it normal?

Frequent night awakenings are probably the biggest challenge for parents of infants. While an adult dreams of 8 hours of uninterrupted sleep, a child can wake up every 2-3 hours, and sometimes even hourly. It is exhausting, irritating, and makes you doubt your own strength. However, it is important to know: from the perspective of physiology and evolution, frequent night awakenings are absolutely normal and even a protective mechanism for a child in the first year of life. It is not a "bad habit", but a biological need.

Physiological reasons for frequent awakenings

At the core of night awakenings lies the unique sleep architecture of an infant, which differs radically from that of an adult.

• Short sleep cycles: An infant's sleep cycle lasts about 45-60 minutes. At the end of each cycle there is a light awakening. If the child cannot transition from one cycle to another on its own (a skill that develops gradually), it will call for mom's help.
• Need for feeding: An infant's stomach is very small, and breast milk is digested quickly. Night feedings are a physiological necessity to support growth and development, as well as to maintain lactation in the mother.
• Predominance of active sleep: Infants spend up to 50% of their time in the active phase of sleep, during which they are easily awakened. This is an evolutionary mechanism that allowed the child to wake quickly in case of danger or discomfort.

Development and psychology: Other reasons to wake up

In addition to physiology, intense developmental processes affect sleep.

• Cognitive and physical leaps: While mastering new skills (rolling, sitting, crawling) the child's brain is so active that it continues at night, disrupting deep sleep. More about this phenomenon can be read in the article about growth spurts and developmental crises.
• Separation anxiety: In the second half of the first year the child begins to perceive itself as a separate individual from the mother, which triggers fear. Waking up alone at night, it may become scared and start crying to make sure mom is nearby.
• Physical discomfort: Pain from teething, itching from eczema, or a runny nose can be common reasons for awakenings.

Understanding these reasons helps parents shift the focus from "how to make the child sleep" to "how to help the child meet its needs". This reduces stress levels and makes it easier to get through this temporary, though challenging, period.