I thought it would be of interest to us to learn of upasana from Pujya Shri Swami Sadyojata Shankarashram through a conducted meditation taken at Tirunavamallai. A traditional form of shuddhi (of the sushmna nadi) - pleasing and inspiring for those of us who are devotional and visual. I personally find it experientially very delightful and inspiring.... quietening the mind totally for focused peaceful japa.