After all, many exhausted parents look forward to the time when their baby finally sleeps through the night. Particularly in the West, an industry of sleep coaches, books and articles has sprung up, promising to help families achieve what many see as the holy grail: a baby who sleeps in a crib, alone, all night, and has several long naps during the day. Even some paediatricians warn parents that, if these goals aren't reached, children are less likely to get the sleep they need to grow and thrive.