A couple rocking on the bench sends air pulses to another room causing balls to move and pens to transcribe the couple's motions onto paper. The paper is moved by a third person riding a stationary bike. The couple on the bench can also watch a video monitor before them where the balls appear to bounce into the air. The motion is delayed and languid as though under water. The action of the balls is best when the couple is moving slowly together.

Conservation of Intimacy suggests that if there are mechanical laws which apply to our social world, intimacy may be fundamental. As both an homage to and critique of science's insatiable quest to understand everything, the piece extends Marey's mechanistic endeavors into the realm of intimacy.