Z Altug is a licensed physical therapist and wellness consultant in Los Angeles, California. He is the author of Integrative Healing and coauthor of the 2012 Healthy Lifestyle Wall Calendar, The Anti-Aging Fitness Prescription, and the Manual of Clinical Exercise Testing, Prescription and Rehabilitation.
Z enjoys writing, playing sports, and learning about astronomy.
Tracy Gensler is a registered dietitian in Chevy Chase, Maryland. She is the author of Probiotic and Prebiotic Recipes for Health and coauthor of The Anti-Aging Fitness Prescription. She has collaborated on over a dozen books and has written for the Good Housekeeping website and magazines. A children’s music group, The Imagination Movers, contacted Tracy to say that one of her articles inspired one of their songs, “Healthy Snacks.” Her kids thought that was pretty cool.