Two major sources of these asanas have been identified: the exercise sequence Surya Namaskar (the salute to the sun); and the gymnastics widely practised in India at the time, based on the prevailing physical culture.
These changes enabled yoga to be practised as a flowing sequence of movements rather than as static poses, and in turn this allowed sessions to focus on aerobic exercise.
[4] It may be far older than that; a 7th-century stone carving in Mahabalipuram appears to contain a figure standing on one leg, perhaps indicating that a pose similar to Vrikshasana was in use at that time.
[11] Some, such as Tadasana, appear in the 1896 Vyayama Dipika, a manual of gymnastics, as part of the "very old" sequence of danda (Sanskrit for "staff" or "stick") exercises.
[14] He and his rival Yogendra began to combine asanas with Indian systems of exercise and modern European gymnastics, having according to the scholar Joseph Alter a "profound" effect on the evolution of yoga.
"[19] Norman Sjoman argues that Krishnamacharya drew on the Vyayama Dipika[20] gymnastic exercise manual to create the Mysore Palace system of yoga.
Such a sequence could be performed quickly if desired, making for aerobic exercise, possibly at the expense of a more meditative practice.
In its modern form, it was created and popularised by the Rajah of Aundh, Bhawanrao Shriniwasrao Pant Pratinidhi, early in the 20th century.
[37] Its standing poses, integral to modern international yoga as exercise and the vinyasas used in some styles to transition between the asanas of Surya Namaskar, vary somewhat between schools.