Twilight feels a little bit on the thick side, so conscripts her friend to help her burn off a little extra padding her librarian days have put on her hips.

Who else to ask but Rainbow Dash?

Complications arise (inevitably) when the Prismatic Pony finds something else to occupy her mind.

(A ship fic -I have to do one, fan fiction rule- between two characters I got out of a random generator. Plan to make this a thing. wish me luck XD)
The second half of the ship (first is Rainbow Dash) is revealed in the second chapter (already written)