Where do I start? Just being in the presence of an enlightened master is a grand thing of itself. Kind of reminds you of your true authentic nature. All problems are washed away and being in the moment is much easier.
The health benefits have been astounding for me. During the seven day yoga program that he facilitates, he talks about many things, including yoga, food, enlightenment, and various other topics. He also give you a program which is designed for self-realization ultimately, but there are many positive health benefits also that result.
I will name some of the benefits. I have much greater lung capacity from the program, which helps because I sing and also because using more of your lung capillaries translates to increased well-being. I am in much more control of my emotions and levels of awareness have increased. I feel I have let go of blocks and my overall enjoyment of life has significantly increased. I feel more in tune of what my body needs and what is not beneficial for my evolvement. I feel more relaxed in general and more in touch with nature. Sadhguru's program facilitates a person's opportunity to attain the state of "silence", which makes the external world appear more illusionary as the days roll on.
In short, everyone I've talked to who has taken the program has been raving about the results. Before I took the program I didn't know what to think (no expectations) but I am truly thankful and express immense gratitude for the work that Sadhguru is doing on this planet.
Hope my posting was of any help,