In this animated compilation, a trio of busty gym instructors lead a steamy workout routine, their tight, revealing outfits leaving little to the imagination. As they demo each exercise, their bountiful assets jiggle and bounce, making it difficult for their eager students to focus on their form. The instructors, ever the teases, can't help but notice the growing bulges in their students' pants, leading to a series of lewd encounters that put the 'cardio' in their workouts.