Please add spaces between words: Motherswhosmokehavenicotineintheirbreastmilkwhichcausestheirbabytosleeplessandwakeearlierfromnapsthanbabiesofnon-smokingmothers.Theremoresmoked,thelessababywillsleep.
Mothers who smoke have nicotine in their breast milk which causes their baby to sleep less and wake earlier from naps than babies of non-smoking mothers. There more smoked, the less a baby will sleep.