When cooling a hot horse after exercise, many people simply spray the horse all over with water and do not scrape away the excess. Does it really offer a benefit to spray the entire body as opposed to just the legs and belly?

Spraying water on a hot horse to cool it off promotes convection cooling and assists the horse in lowering its core temperature. The reason you spray the legs and belly is because the blood vessels are closer to the skin in those locations, and it promotes faster cooling of the horse’s core temperature by carrying the cooler blood to the heart.

Another important part of cooling out horses is evaporation.  After the horse has been sprayed off, it is very …