Not necessarily in my case but there is a good amount of fit or muscular women in Montreal where JFL is filmed. So seeing some on tv is a bonus 😉
Not a buff example, but I would say at least fit (no flexing or so in this video, just hints): https://www.youtube.com/watch?v=uHnDRd_DX8c In a prank with the "epic old man": first appears at 10:08 running in the scene, was not supposed to be the victim at first. Second appearance around 10:34 to 10:45 interacting with the prankster, again 10:50 to 10:55 and a last time 11:05 to 11:08 (where you can here her voice). The pec area caught my interest; nice arms, too.
https://www.youtube.com/watch?v=W5FyrQi2tyw
While there are few pranks where a strong girl plays the prankster ("Buff Girl Strong Hug Prank" https://www.youtube.com/watch?v=YuO9bDn_BEk or "Fat Man Ballerina and Female Body Builder" https://www.youtube.com/watch?v=H6B4wyMVn_U for example), this is the first time I found a muscular female "victim" of the pranks.