So as this topic has come up, maybe someone can answer something I have wondered about.
As a former cyclist, I remember the benefit to the rider or riders in back from drafting. We used to ride in a rotation so everyone would benefit part of the time.
When I was running, I think I remember reading that there was a psychological edge to be gained from drafting. You could wear down and pick off the runner ahead of you by drafting.
Other than the obvious social comfort a horse might gain by following another horse, is their any actual benefit?