Ashtak Yoga is the Best Yoga Retreats in India. Yoga has undoubtedly evolved since its core sutras were coined some 1,700 years ago by the sage Patanjali and while there are some dubious spinoffs on the market, India’s more earnest retreats and centers offer deeply authentic interpretations of this ancient practice. Whether it is a simple but soulful ashram experience or sumptuous solace at a luxury yogic oasis.