"Taking control of one's health, darling. Nothing more than that."
I doubt this is about the weight, I think she just wants someone to look at her, probably someone semi decent.
Observations
Her tail's like a helicopter at random, quite the sight. Complains constantly... Frustrating, but kinda cute? Wine wine wine, probably a connoisseur or something. She dislikes working out around other people. Yet ultimately, seems to be a good girl underneath all that class bullshit. Interesting...
"Darling, I'm paying you to whip me into shape. Not to stand there looking at me like that."