>>32243097I will take this opportunity to shameless shill myself, hello! While not exactly /fit/ by definition I play a healthy (heh) number of exercise games on my channel. Since I've started streaming at my starting weight of 268 lbs. I've lost a total of 106 lbs. with a lot more to go.
If you're looking for some truly /fit/ vtubers though Shimada Tiger is a very inspiring vtuber who is big on fitness. She typically showcases her workout program during her pre-gane zatsudans. Fighting games are her passion and I feel as though she's one super transformation away from becoming a fighting game character herself.
And then there's also Tomoe Umari who just recently did beginner's primer on fitness (
https://youtu.be/g4q05n5x-O4). Her job as an army stable master makes it difficult for her to stream, but her shorts and pre-recorded content are both humorous and informative. Her debut is scheduled sometime this month and I'm excited to see her long form content.