​Once a upon a time, there was a king named Satyavrata who was performing his spiritual practice by the river. A small fish comes into his hands and just as he is about to throw the fish back into the river, the fish requests the king to save its life. Heeding its request, the king puts the fish into a jar of water but the fish starts growing and the jar is not big enough for it. Then the king throws it into the river, but it soon outgrows the river and the king then throws it into the Ganges. Finally the fish grows so large that only the ocean can contain it.
 
Satyavrata realizes that the fish must be some kind of sacred deity and bows down in submission asking the fish for enlightenment.  Then the fish reveals himself as Lord Vishnu. Vishnu warns the king that there will be a great flood that will submerge the world and destroy all living beings. Vishnu asks Satyavrata to build a great ship and gather all the worthy sages, birds, animals and plants.
 
The rain begins and it rains, and rains, and rains and rains. The ship is tossed and turned on tumultuous waves amidst the thunder and lightening of the storm. The king has to steer the ship but he has no idea where to direct it. As promised, Vishnu, as matsya, the giant fish, steadies the ship from behind and leads it to safety.  

In modern society, the most common and accepted form of Yoga practice is āsana practice. The practice begins with the body and is known as Hatha Yoga. “Ha” refers to the moon, the essence of the Self, the subordinate side; the intangible, receptive and feminine side of the Self, the negative side of energy.  “ṭha” refers to the sun, the form of the Self, the dominate side; the physical, expanding and masculine side of the Self, the positive side of energy.