There are different types of horse 'body clips' that are intended to protect the back, keep the horse's limbs warm, etc...They are usually clipped in the winter months, of a rider does alot of winter workouts...the clips keep the essential body areas warm, or protected from the tack, and help the horse cool and dry off easier should he get sweated up. Most of these clippered horses will be blanketed to keep them from getting chilled during turn out.
For horses with just a 'neck' clip, this is done most often on Arabians and half Arabian horses, and help the owner see just what kind of refinement is under all that baby fur. Alot of people who show their horses early in the year, will do a body clip, in order to help attain a smooth appearance, before the actual winter coat sheds out.
"The ideal horseman has the courage of a lion, the patience of a saint, and the hands of a woman..."