The Rein Back or Backing
The rein back (back-up) is carried out from the halt. It is a two beat diagonal Gait and should be fluid in motion. The steps should be straight, active and unhurried, but of good length. The feet must be picked up and put down cleanly, with the horse maintaining its correct outline and remaining on the Bit. The horse must not raise it's head or hollow its back.

The rein back can only be successfully performed if the horse is calm and relaxed when at the halt. Your body should remain upright and your back and hips supple. Force must never be used.