With the rise of the Strong Not Skinny movement, there is an abundance of powerful women ready to use their muscles to create sexual content and be paid handsomely in the process - while exploring the fetish. Olivia meets a bricklayer who has passed the million-pound-mark on OnlyFans after two years of showing off more than just her muscles, and martial arts expert Black Venus, who roughs her clients up in the ring for a large fee but draws the line at bone-breaking requests