Wow Ariadne, thank you for all of this information. I didn’t realize there is so much to it. I have a hatha yoga dvd and a basic mat pilates dvd that I had used in the past before I really got into fitness and became a trainer. I loved the calming/relaxation part of yoga and pilates, while also really working your muscles and getting movement into your body. I would like to teach very basic classes out of my home, or be able to incorporate some pilates/yoga exercises into my small group training classes, so I was hoping there would be a basic online certification available that allows you to just introduce pilates and yoga exercises within a regular training routine.