The process of “cooling your horse out” is extremely important and can really help in the longevity of his career. After significant exercise you should have a cooling out period of 20-30 minutes and offer your horse water every 3-5 mins. Allow them to take 7-8 gulps of water and you can watch at his throat latch to see how many he is taking. If he drinks too much too soon it can lead to problems. In winter some horses will not drink cold water so you might have to warm some so he will be able to drink.