During the United Nations General Assembly meeting in 2014, Indian Prime Minister Narendra Modi took initiative to adopt International Yoga Day to tackle the diseases caused by the climatic changes. On December 11, 2014 it was accepted by world leaders and then on wards "June 21st" is celebrated as International Yoga Day.
For the first year of Yoga day celebrations India Post has issued a stamp. Following that trend this Year also India Post has issued stamps for Yoga Day. This year's focus is the "Surya Namaskar" (Sun salutation).
Surya Namaskar consists of 2 cycles of 12 postures, It starts and ends with salutation. First cycle is done with the right leg and the second cycle is done with the left leg. Six postures are issued in Rs.5 denomination and 6 Postures are issued in Rs.25 denominations.
My stamps are yet to arrive, so I have taken the pictures from India Post website. The name of the posture is given in the stamp itself. I even found a YouTube animated video on the Surya Namaskar!