Your baby is starting to draw conclusions about the world all around and look at everything with curiosity, even his or her own reflection.

Prop an unbreakable mirror next to your baby or set him or her in front of your mirror when you're getting ready in the morning. Your baby won't realize that it's actually his or her own image in the mirror, but that doesn't matter. Your baby will love staring at the reflection and may show signs of delight with an all-out gummy grin.

Nodding off

At last, your baby's sleep patterns may start to settle down, giving you some rest. Many 4-month-olds sleep for a six-hour stretch during the night, though some babies won't do this until age 6 months or later.

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