One of the best ways to let out some excess energy from your horse before you ride is to longe him. This will help you see how your horse is going to react before you even step a foot in the stirrup. If you have a small corral or round pen, you can send the horse around without a rope. Have him walk, trot, lope and then work back down. You may also have him do some turns to limber him up. Sometimes horses that are excited to be out or who are tight will explode into a buck as soon as you get on. Longeing will give him the opportunity to get any of that out of his system.