Summary: You've been working hard at the gym late at night, grinding alone like you always do, when a cute brunette trainer finally notices you. She approaches with a flirty smile and offers you a completely free personal strengthening session after hours. The gym is empty; just the two of you. She seems sweet and professional at first. She even sets boundaries and gives you a safe word. Then she tells you about her "special advanced technique" that boosts testosterone, core strength, and mental toughness like nothing else. All it takes is a little hands-on work… specifically on your balls. Slaps. Punches. Kicks. She insists it's all part of the training. That the pain and swelling are necessary. That you just need to trust her and the technique. Themes in this audio include: [CBT] [Late Night Gym] [Slapping] [Punching] [Kicking] [Bratty Domme] [Femdom] [Twist Ending] Voiced by BrittanyBabbles Follow me for free on Patreon Become a member! Find my masterlist of 400+ audios on my website Click here to shop for the best pocket pussies and sex dolls using my affiliate link