Typical Sleep Duration for NewbornsNewborns generally need 14–17 hours of sleep in a 24-hour period. Unlike older children or adults, this sleep isn’t consolidated into one long stretch at night. Instead, it comes in short bursts of 2–4 hours, both day and night. This is because their tiny stomachs can only hold small amounts of milk at a time, so they wake frequently to feed.
Some babies may sleep a little more or less, and that can still be normal. The key is watching your baby’s overall patterns. If they’re alert during wake windows, feeding well, and growing steadily, then their sleep duration is usually just right.
It’s also worth noting that as your baby grows, the total amount of sleep stays high, but naps gradually become longer and nighttime sleep stretches increase. By 3–4 months, many babies can sleep 4–6 hours at night, though every child develops at their own pace.
How Sleep Cycles Differ from AdultsNewborn sleep is very different from adult sleep. While adults move through cycles of light, deep, and
REM sleep over 90–120 minutes, newborns have much shorter cycles, around 45–60 minutes.
Because of these shorter cycles and lighter sleep phases, babies wake more frequently. This is normal and protective; it ensures they feed often and helps regulate their breathing. Over the first year, sleep cycles gradually lengthen and become more like an adult’s, with longer stretches of deep, restorative sleep.