As soon as babies are born, they enter a world that is totally different from the safe and secure environment in the mother's womb. Their circadian rhythm is not yet set, and they wake up frequently for feeds as their stomach is tiny and can't have much feed at a time. As babies grow, their sleeping hours gradually increase. Still, they may not be able to sleep through the night. Babies also face sleep regression as a part of their developmental process which disturbs their sleep patterns.