"Why does my baby wake up crying?" That's a question we hear a lot - and it's the questions we're answering in today's quick tip article! Why Your Baby Wakes Up Crying Well, for starters, your baby may obviously wake up crying sometimes due too the need to eat (hunger is a powerful motivator!). Additionally, your baby may wake up with a wet or dirty (or leaky) diaper, or may wake up because he's too hot or cold. These are all perfectly reasonable reasons for a baby to wake up