We learn from coaches and fitness class instructors that, like any other beast of burden, the body is always inclined to take the path of least resistance unless we can “trick” it with a sudden variation in the workout routine. Western philosophy has long separated body from mind; fitness culture takes this dualism further—to an adversarial relationship in which mind struggles for control over the lazy, recalcitrant body. I plan to work out today, but I will not tell you exactly what I’ll do, lest my body find out.