Nina looks at different household inventions and finds out how they work. With the help of her trusty neurons she examines the items to answer children's questions If you're a fan of comfy, cosy beds then this episode of Nina and the Neurons Go Inventing is for you. Best friends, Eloise, Bethany and Zoe are asking: what makes my bed so bouncy? Nina and fabulous Felix, the touch neuron, show the girls the science of bounciness by opening up a mattress in Nina's super-cool workshop and then taking a very exciting journey to see some truly monstrous inventions. In this bouncy episode we learn all about springs and even invent our very own spring-filled mattress.