What is the cool-down phase of a dressage training session?

The cool-down phase of a dressage training session serves the complementary purposes of allowing the horse's muscles to release and lengthen after the collected, engaged work of the training session, beginning the physical recovery process that allows the session's gymnastic demands to produce adaptation rather than accumulated fatigue, and ending the session on a note of genuine relaxation and reward that reinforces the horse's positive association with training. The cool-down begins after the main working phase has concluded and typically includes extended trot and walk work in a longer, more relaxed frame — often the long and low stretching work that allows the horse to reach forward and down and release the muscles of the back and neck. This stretching work is not merely a formality but serves a genuine physical function: the muscles that have been working in a collected posture need the opportunity to lengthen and release, and denying this opportunity by returning the horse directly to the stable from collected work increases the risk of muscle soreness and reduces the quality of the next session's warm-up. The quality of the stretching in the cool-down is a useful indicator of the working phase's quality: a horse that stretches genuinely forward and down with maintained rhythm and energy in the cool-down was working through in the session; a horse that drops its head without seeking the contact or that loses all rhythm and energy in the stretch was showing some tension or restriction during the session that the stretch reveals. The walk at the end of the cool-down — on a completely loose rein, allowing the horse to relax its topline completely — should be sustained for at least five to ten minutes before the horse is returned to the stable, both for physical recovery and as a clear signal to the horse that the training demands are finished and genuine rest has begun.