Yoga on the ghat is the best experience I had in Varanasi. I highly recommend it! The experience was indeed stressed relieving. What I liked the most about this experience is how these people make this exciting, and I must say the instructor was a pure professional guy.
It was altogether a new experience for me, doing yoga on the ghat. Infact instructor was also very friendly yet professional. Well organised and will soon do it again.
This experience only has a few reviews, but you can read what other travellers have to say about the operator.