Ashwini Mudra
In Sanskrit, Ashwini means "horse" and Mudra means "gesture." This practice is a Adhara Mudra meaning "perineal gesture” practice and is described in the Hatha Yoga Pradipika, Gheranda Samhita as well as the Shiva Samhita.
This Mudra is described as a practice that invigorates the body, cures issues of the rectum and awakens Kundalini which activates Muladhara Chakra.
This practice translates to The Gesture of The Horse because horses are known to preform this practice.
This practice has two techniques, the first is a practice of rapid contractions while the second practice incorporates the retention of the breath.
Practice - Technique 1: Rapid Contraction
Sit in a Meditative Asana or a comfortable seated position.
Preform Mula Bandha by rapidly contracting and relax the muscles of the anus.
Confine the muscle contractions to the anus, all though you will find that other pelvic muscles will contract.
Allow the muscular contraction and relaxation to be rhythmical.
Do not strain. If needed pause take a deep inhale, relax with the exhale and restart the practice.
Practice - Technique 2: Slow Contraction and Retention
The six cleansing actions are intended to be the start of a Yoga practice in order to clean, strengthen, remove toxins and improve the flow of Prana through out the practitioner.
Yoga poses help to elongate and strengthen the muscles of the body as well as to calm the mind for the deeper spiritual practices of Yoga.
Breathing exercises are a great practice to remove carbon dioxide, increase lung capacity as well as being a good preparatory practice for the deepest spiritual practice of Yoga, Meditation.
The four body locks that makes up this practice give the practitioner the ability to hold or lock Prana in certain locations of the body. These practices also allow the practitioner to release blockages that may be holding the practitioner back.
The gestures in this practice include the whole body and are intended to awaken Prana, Chakras as well as Kundalini energy within the practitioner.
Meditation is the highest spiritual practice of Yoga which is why this practice is the most difficult practice to preform, but with correct knowledge and dedication, can be the most profound practice of Yoga.