Hi I am a physician from Hawaii visiting my daughter who is attending U.T. Austin. I am a regular step aerobics goer- enjoy it immensely due to afterwork-out energy and amount of calories burnt. But your Yogagroove is as amazing - even better. With less stress on my knees - I sweat off so much calories and felt a 100 % better. After arriving yesterday from a long international travel for a Humanitarian Medical Mission - my daughter took me to your class last night- promising that I will feel envigorated. She is right. I felt great after your class. I slept for over 10 hours-- the most I have ever slept in months. Great job. I wish I can take you with me to Hawaii, Mahalo... Dr Leila Williams