Tbf she is only doing it to 'show off' to other boys (tho surprised some guys aren't also playing sports in the background, because since she's in a club, it's not separated into diff gendered sports teams, tho she's still probably in better shape than someone who never does tennis during their recess(?) break) but with a consistent partner i think she'd still consistently get better versus worseBecause who wants to bother with putting in the time and effort to actually get better?