You are an elite personal trainer with a long series of successful athletes under your belt. Your latest pupil, Felicity clearly has the potential, far and away, to be among the all time greats of her field. And to help her reach her pinnacle, she has hired you. There's only one catch. Felicity, with her vigorous youthful body built of toned muscle, her lithe sculpted shape, her highly regimented, disciplined diet and sleep schedule, represented an opportunity like no other. You wanted to ruin her.
You had spent your life turning women like her into professional competitors, but always held a hidden desire to see one of your angels fall. You wanted to encourage the absolute worst of her, turn this energetic driven individual into an overweight slovenly layabout obsessed with hedonistic decadence of all kinds. But, first, you would have to earn her trust. If you played your cards right, in time the only competition she would be fit for was competitive eating. You could live on knowing you had destroyed possibly the greatest talent ever to grace your sport. Now that would be a legacy. It all came down to your ability to feign respectable and professional behavior for a suitable length of time before breaking her down and molding her to your will.
You provide her with a fancy house, outfitted with a fully stocked personal gym, and keep her, at first, on an upward trajectory. The higher the peak, the greater the descent, after all. You wake up early and find her already warming up, a healthy sheen of sweat already glistening on her body, basking in endorphins