Siri Chilazi is a 20-year veteran fitness presenter, educator, and ACE and AFAA-certified group fitness instructor based in Boston, MA. She is a Master Instructor for the Movement Function Academy, a Master Trainer for Human Reformer Pilates, and a Master Trainer for RAQ THE BARRE®. She regularly presents at industry-leading fitness conferences including IDEA World, SCW MANIA, FitnessFest, and World Barre Summit, and in 2023, she received the IDEA Emerging Trailblazer of the Year award. Siri teaches formats ranging from Pilates, Yoga, and Barre to Step, Strength, and HIIT in person, online, on the WeGym Studio app, and as a visiting guest instructor at resorts around the world with Fit Bodies, Inc. In her second career, Siri is an academic behavioral scientist at Harvard University, a global keynote speaker on gender equality, and coauthor of the award-winning book Make Work Fair: Data-Driven Design for Real Results (HarperCollins, 2025).