I have a question about fluid loss in humidity.
Heat causes perspiration to cool the body. I
didn't think that higher humidity causes more perspiration, it causes slower
evaporation of that perspiration (making it look like more sweat than if it is
arid/not humid because the sweat then evaporates rather than clings to
your skin). So in effect wouldn't you/horse sweat the same amount at a certain
temperature, but just less efficiently *cool* yourself/your horse in a higher
humidity? I can't figure out why, then, there would be worse dehydration in more
humid conditions. Maybe more overheating though.