The action form is similar to a straight line trajectory. Hyperbolic helix refers to the trajectory of a moving point whose polar diameter is inversely proportional to its polar angle, which is shaped like a frog spreading its legs. Frog leaping is a kind of lower limb exercise, which belongs to aerobic exercise. You need to spread your legs to take off. The movement form of leapfrog is similar to that of hyperbolic helix, both of which are outward.