Steve Ettinger is a Certified Strength and Conditioning Specialist and Personal Trainer. He currently runs his own private training company in New York City. Originally from Southern California, Steve has always enjoyed staying active. Forever an avid soccer player, he has earned several coaching certifications and has spent years working and volunteering in youth sports and physical education. He began training clients while earning a psychology degree from Boston University and worked as a children’s behavior therapist before deciding to dedicate himself to fitness full time. Steve teamed up with illustrator Pete Proctor to create “Wallie Exercises,” a picture book about finding fun ways to exercise.

Stephen Savage is the illustrator of the award-winning and New York Times bestselling picture book Polar Bear Night, written by Lauren Thompson, which was named a New York Times Best Illustrated Children’s Book and an ALA notable book, and received starred reviews from Publishers Weekly, Booklist, and Kirkus Reviews. He creates illustrations for a wide range of publications, including the New Yorker, the New York Times, and Newsweek. Stephen lives in Brooklyn, New York, with his wife and their daughter.