When a horse works or exercises, it sweats. This is the horse's natural cooling mechanism. A horse sweats even more when it is not perfectly fit, in warm or humid weather or when it is nervous, excited or agitated. A horse can lose 15 litres of sweat per hour in hot, humid conditions. The type and duration of exercise also affects how much the horse sweats. Exaggerated sweating can disrupt the horse's electrolyte balance, leading to premature muscle fatigue, reduced stamina, muscle cramps and poor recuperation after exercise if not corrected. Heavy Sweat NOW can be given before or immediately after exercise, directly in the horse's mouth. · Compact, light · Convenient · Easy to use · No waste · Very palatable