Run, Mushpie, Run - S1.E46

Mush-Mush, Chep and Lilit notice that Mushpie seems in great shape lately. They want to feel as great as she does and try to discover her secret. When they realise that she works out every morning, our friends decide to join her. And soon, all the Mushables do too. Now Lilit notices that Mushpie doesn't seem in such great shape anymore.