Brown Bear is alarmed when he discovers he can't see his feet ...Poor Brown Bear's tummy is sticking out! He decides to change his shape and asks Bunny and Chimp what they eat. But lettuce, carrots and bananas don't agree with Brown Bear. He wonders whether exercise might be the answer, but - Crack! Crunch! Crash! - swinging through the trees isn't such a good idea! Brown Bear is sadder than ever, until his friends reassure him that bears are supposed to be round - he's the perfect shape and size!