Part 1 There was something oddly satisfying about physical exercise, a sentiment that Brianna Wilde would have found very strange once upon a time. The truth was that she had never been a particularly physical person when she was younger. Oh, to be sure she’d run and played like any other child and had ridden her bike just about everywhere before she’d gotten old enough to drive, though she’d never actually had a car of her own. In fact, the little motorcycle she kept tucked away in her mistresses’ garden shed was the first vehicle she had ever actually owned. However, beyond those youthful adventures and the occasional camping trip, as well as physical education in school, Brianna would certainly not have considered herself particularly athletic in any real sense of the word. She’d been painfully average at best and had been inching ever so slightly toward out of shape as high school came to an end. Once again the blue-haired girl could not help but marvel at how much could change in as little as a year. It was hard to say if it had been anything more than curiosity, and a certain ingrained obedience, when she’d accepted Sofia’s offer to join the blonde’s morning jogs. A combination of both probably, as well as a certain unspoken promise of… other things to spice up the experience. An unspoken promise that had been kept in spades. And yet, as difficult and exhausting as those first few days were, Brianna was still a little shocked at how much she had come to enjoy the experience and how much she had begun to look forward to those morning runs. It was more than just the aroused thrill of exercising in bondage, or the sense of accomplishment as she reached new milestones. No, it was something both more and less tangible than that. She would probably never have Sofia’s sheer enthusiasm, much less Claudia’s abs, but at the same time the blue-haired girl could not help but marvel at the changes wrought in her body since she had started accompanying her mistress on her runs. The physical changes alone were interesting enough, especially the steadily increasing tone of her leg muscles, her thighs in particular, as well as the slight narrowing and firming of her waist, though her growing exploration of corsetry probably also played a role in that as well.
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