From being unable to lift up her head to being able to sit unsupported, your infant’s body undergoes tremendous changes during the first six months. This is an exciting time, and you should encourage your baby to move around as much as possible.  Give her a lot of opportunities to move. Engage her in fun games that will prod her to use her neck, chest, arms, and legs. Use some of the ideas outlined in the steps below. Free your baby from swaddling cloths; let her kick and wave about when she’s awake to strengthen her leg and arm muscles. Put her under a mobile and let her kick and swat at the toys; the point is that she moves her body and not that she accurately hits any of the toys. When she is able turn on her tummy on her own, give your baby daily tummy time; this will strengthen her chest, neck, and arms in preparation for crawling.  Softly ring a bell one side at a time to make her look for and turn to the sound; you can do this when she is on her tummy or on her back. Put a toy just a little bit out of her reach; say “come and get it” and wait for her to try wiggling or rolling towards it. Gently stretch her arms over her head and bend her knees towards her tummy for exercise.
Get your baby moving. Allow your baby to kick her legs and move her arms. Give her daily tummy time. Stretch her arms and legs.