[DeepL Translation - needs review] Volume 1: "Hibiki...Have You Gained Weight Again?"
A high school girl who loves "eating
Hibiki Sakura, a high school girl who loves to eat, decides to start a diet
She decides to start a diet!
She can't continue to exercise alone.
She joins a gym!
At the gym, she meets her classmate, Akemi Kanryuin, a young lady.
At the gym, she meets her classmate, Akemi Kanryuin, a young lady...!
In order to get her ideal body,
Her training begins in order to get the body...
I read this manga while it was available for free on Bookwalker/Booklive. The book contains some real (and actually good) explanation of training exercises and will teach you a lot of vocabulary related to that field. Sadly, the manga is riddled with fan service (who would have guessed, considering the cover, eh?) which greatly decreased my enjoyment.