Robin Arzon (Author) Robin Arzon is vice president of Fitness Programming and head instructor at Peloton. She believes that sweat transforms lives, and her story is living proof. Robin is the New York Times bestselling author of Strong Mama, and Shut Up and Run. She lives in New York City. Addy Rivera Sonda (Illustrator) Addy Rivera Sonda is a Mexican artist who has also illustrated the New York Times bestseller Strong Mama by Robin Arzon, Graduation Groove by Kathryn Heling and Deborah Hembrook, Junebug: No Life Too Small by Nicole Daniels, Strong Mama by Robin Arzon, and Feliz New Year, Ava Gabriela! by Alexandra Alessandri. She lives in Veracruz, Mexico. She invites you to visit her on Instagram @addy_rivera.