When this scene opens, 46-year-old Katrina is on the phone with a friend. The friend tells her all about the personal trainer she's been working with. And fucking. The thought of this gets Katrina so turned on that she 1.) Starts playing with herself through her workout clothes; and 2.) Demands the trainer's phone number. Fortunately, Katrina's friend is willing to share, and the next thing we see is Katrina and the trainer having a workout session.