With the hot chicks who have to get to this gym after Christmas and their binge eating, and this personal trainer has thought of setting his sights on this obese mature woman, who her own grandchildren have sent to play sports so she can lose a few kilos. Of course the challenge is served, if he manages to get her in shape, and he may succeed, because to begin with he has tried a training with her that never fails, motivating and effective: free sex. And lo and behold, the guy has verified that, despite her kilos and her age, the lady fucks like a brown beast.