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“When this change takes place, our little one moves from 50% REM sleep to 25% in order to make room for those first two stages. Around 4 months old, your baby will start cycling through all 4 stages of sleep, instead of just two. This is because she jumps right into that deep sleep stage. These are also known as active sleep and quiet sleep - this is because your baby may be more physically active during the former, and more still during the latter.Īs a newborn, you were most likely able to rock or nurse your baby to sleep, and then put her down without her waking. Our newborn sleep cycle chart shows that newborns (babies 0-3 months old), only experience two of the four stages of sleep: stage 3 and stage 4, or REM, and spend about half of their time asleep in each stage. So, how does your baby's sleep cycle work? Newborns and adults have very different sleep cycles. Baby's sleep cycle: how your baby's sleep differs from yours Though these times can vary due to factors like sleep disorders, this baby sleep chart below shows how your baby cycles through the stages of sleep much quicker than adults. This skill is learned, and until your baby can fall back to sleep independently, they won't be able to sleep through the night. Infants, however, will wake up during that shift and probably need your help to get back to sleep. Think about how you’ll barely wake in the middle of the night and shift positions or open your eyes for a split second before falling asleep again. The other difference between our cycles and baby's is that when we're shifting from one cycle to the next we might wake up, but we almost immediately fall back to sleep (unless affected by sleep disorders).
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When adults complete a sleep cycle and shift to the next cycle, we might briefly wake up or come close to waking up. Therefore, much of his or her sleep is comprised of light sleep, often accounting for more than half of their recommended 13-18 hours of shuteye.
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For you, deep sleep can persist up to 90 minutes at a time.įor your baby, it may not last an hour. Though you both cycle between periods of deep sleep and shorter stints of light REM cycle sleep, your baby does so many more times throughout the night. Your baby will first enter a lengthy period of light sleep from which it is easy for him or her to awaken. It's also the stage of sleep where we do most of our dreaming.Īs you can see below, your own sleep looks much different from the newborn sleep cycle. You might be fast asleep from the moment your head hits the pillow, while it takes infants longer to drift into a deep sleep than it does for you. This is where the brain starts to kick in and consolidates information and memories from the day before.