A boot assembly and method that simulates, in a static equine animal (stalled or hauled), the natural mechanical action of walking or other gaited exercise. The assembly has a boot, containing a shock absorbing pad that is fitted with one or more pulsing bladders disposed under or inside the shock absorbing pad. Pressuring and relaxing the pulsing bladder in the bottom of the boot rhythmically pushes against the sole and frog and against the toe of the equine hoof in much the same way that the hoof is exercised when the animal is moving. The pulsing action helps stimulate blood flow through the hoof and is beneficial to shod, injured, and transported horses. The assembly may be fitted on one or more hooves, and may be automated to provide timing and sequencing to simulate different gaits of the animal. In some aspects, the assembly is disposed in an ice boot or ice spa boot to also provide cryotherapy as well as simulated exercise.