Level 3 Certified Professional Ski Instructors Association (PSIA) Instructor and Trainer. Formerly a scientist and inventor."At age 71, I thought I was doomed to deterirate. I have been involvd in sports all my life. As a result of Pilates for Yoga® I learned how to stretch in a way that permanently alleviates hip, knees and back pain and I have increased stability and flexibility. In my opinion the Pilates for Yoga® system should be part of the national PSIA training." Santa Fe, NM