Acknowledgments Thanks to my parents for their unconditional support of me and for the values of diligence, generosity, persistence and honesty by which they lived. From decades of my professional life spent in dance, yoga and bodywork, I am grateful to many teachers, notably Elaine Summers, Merce Cunningham, Anahid Sofian, John Friend, Mary Dunn and Carrie Owerko—their joy in movement was and is contagious. Thanks to the anatomy teachers whose wisdom has inspired me: Dorothy Vislocky, Irene Dowd and Thomas Myers. My students and clients have supported me, challenged me and fueled me to continue learning. A project with Martin Kirk was the impetus to produce this text, and I value our discussions over six years of collaboration. Several friends and colleagues took the time to read early drafts of this text and gave me valuable feedback; thanks to Dr. Loren Fishman, David Fink, Susan Genis, Jim Bernaert, Ruthie Bernaert, Jayendra Hanley and Dina Ghen. Thanks to Molly Heron (yoga teacher and designer) for her keen eye and generous spirit in producing the cover design. IIlustrators John Karapelou and Liem Nguyen have enriched this book with their excellent artwork. Special thanks to my family for their constancy and support.