Princess Celestia has put on a few pounds in the thousand years since Princess Luna was banished to the moon. It's only natural, given her extreme fondness for cake and the lack of time for exercise. And she's always tended towards being large anyway. It hasn't really been a problem until one day, on the first day of her first real vacation in a thousand years, she discovers that she's gotten so big that she can't fit even her most loose fitting clothing on her expansive body.

Luckily, Celestia has a plan; after borrowing a book on weight loss from Twilight, she ropes one of her personal guards into being her personal trainer and strongarms Luna into joining them so she doesn't have to suffer alone, and begins an extensive regime of intense exercise.

The techniques in Twilight's books are a little bit unorthadox, though.

WARNING! CONTAINS ANTHROS, FUTA, MILD BBW, UNREASONABLY HEAVY PONIES, TITFUCKING, COCK EXPANSION, EXCESSIVE CUM, CUM INFLATION, AND PROBABLY A BUNCH OF OTHER WEIRD STUFF

Cover art by sunlover611, coloured by Hyperstorm_h!

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