Pokémon - S11E40: A Lean Mean Team Rocket Machine!

What's the Story?

On their way to Celestic Town, Ash and his friends have to take Piplup to the Pokémon Center after it collapsed from over-excessive training. Meanwhile, Team Rocket, who were following the group on a slope, decide to have lunch in a luxury restaurant. But then Jessie notices that Meowth's golden charm is buried under rolls of flab. The trio now realizes that, due to them having led a rich and luxurious life ever since they had earned the money at the summer school, they have become lazy and grown a lot in flesh. Wanting to return to their former "sharp and cool" shapes, they start a harsh training session.