I've been tutoring past 5 years and have a master's degree. It is an Indian classical dance form which is very gracious and expressive. It has a lot of story dancing related to our culture. The posture and the training would also help you with a good workout. There are theory classes as well as practical. The session would be for 1 hour each and it gives you good refreshments. Once you are apt with the basics you will be provided with the ghungroos, basically a lot of bells which are supposed to be tied on the feet. It is very auspicious to get one. Bharatnatyam is something that everyone can do it. It will give you a good body posture and actual gestures from where the other dance forms have arrived. With online, I've a good experience of 2 years and still counting.