4 months old with little working muscles She lay flat on her back little controll of her arms and legs. I put her on her stomach and lay beside her. Patiently talking her through her frustration as she lay there looking at me with intent her big glossy brown eyes seem to capture the moment and she starts to coo. wiggle wiggle wiggle, rocking like a boat she finally flips over. Praise and smiles all around she has hit a mile stone. Solveij is my sunshine