Tadagi Mudra
In Sanskrit, Tadagi means "water pot" and Mudra means "gesture." Tadagi is derived from another Sanskrit word, Tadaga meaning "lake" or "pond." This practice is a Kaya Mudra meaning "postural gesture" practice and is described in the Hatha Yoga Pradipika, Gheranda Samhita as well as the Shiva Samhita.
This practice is the first Mudra described in the Gheranda Samhita where it is said to destroy old age and death.
This Mudra is similar to the practice of Uddiyana Bandha because with both practices the abdomen is brought inwards towards the spine creating a concave curve to the abdomen which is where the practice gets it's name.
Practice
Preform Dandasana or staff pose.
Place the hands on the knees while keeping the head and spine straight.
Inhale closing the eyes and relax the body.
Exhale leaning forward, bending at the hips and grasp the big toes with the thumbs, index and middle fingers while keeping the head facing forward.
Inhale slowly and deeply while expanding the abdominal muscles to their fullest extent.
Retain the breath inside for a comfortable length of time without straining the lungs.
Exhale slowly and deeply while relaxing the abdomen.
Maintain the hold on the toes.
Repeat the breathing practice up to 10 times.
Release the toes and return to the starting position.
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.