Babies strengthen from the neck down. That's why lifting the head is the first to happen and standing on two feet is the last. We can build strength and encourage the natural physical developmental progression just by using a few gentle and fun techniques. Be guided by your baby here. Babies younger than four months will need more help and support around the neck. Hold younger ones more forward, allowing the head to hang forward. We just want to avoid the neck lagging behind, therefore straining the neck.