Sadistic Trainer

A colleague brought me along to these fresh training sessions at the fitness centre. The upside is that everyone present is incredibly attractive. The downside, however, is that the workout is incredibly challenging, and the instructor is exceedingly tough! Although I aim to improve my fitness level, the classes are enjoyable.
During particularly strenuous moments, as I reach my limit, I daydream about completely dominating the trainer, undressing alongside fellow participants, and engaging in group intercourse right in his presence. Following the workout, I feel elated, fixating on the idea of subjecting the cruel instructor to an unconventional punishment.