Horses should be brushed before riding to ensure the saddle area is free from debris.
After riding, your horse needs cleaning to remove sweat and accumulated dirt.
A horse may being brushed because you are rough with the horse, it hurts the animal, or it relates it to an unpleasant experience.
If you only brush your horse before riding hard, then it may associate it with hard work.
Daily handling is an excellent opportunity to bond with your horse and should be included on days you don't ride.