Question
The baby boy is three and a half months old. Every time he lifts his head, he uses his belly to push up, and his feet kick up. When being held upright, he often tilts his head forward. When sitting up, he likes to arch his belly. Is this normal?
Answer
We often use a rhyme to describe this process: “Three months old can lift their head, four months old can flip over, six months old can sit, seven months old can roll over, eight months old can crawl, and around one year old they can walk.” This saying is generally easy to understand. Generally speaking, children can lift their heads by the second month, turn over by the sixth month, sit by the sixth month, roll over by the seventh month, crawl by the eighth month, and walk around one year old. Sitting up usually happens around six months old, and lifting their heads can begin around two months old.