The Crazy Hen was a token for play for 50 years: the whimsical bird-look evokes children's curiosity. The rocking sensation makes them want to come back again and again. Movement response is one of the greatest play sensations there are. Apart from the fun, this adds a feeling of control to the child's play. The responsive movement also trains the understanding of cause and effect in young children: that actions have an effect on the world. Rocking on the Crazy Hen trains the child's sense of balance and space as well as hand and arm muscles when holding tight and pushing your feet hard into the foot support. All of these basic motor skills and muscle training actions help train the child's bodily cognition, supporting important life skills.