Parkinson’s Expert on the Science of High-Intensity Exercise

In this episode of the CrossFit Podcast, host Jocelyn Rylee sits down with Michelle Hespeler and Dr. Sule Tinaz of Yale School of Medicine to explore the science and lived experience behind high-intensity exercise for Parkinson’s disease. Hespeler was diagnosed with Parkinson’s at age 40. A former physical education teacher, she began experimenting with structured, high-effort training long before exercise was widely discussed as part of Parkinson’s care. Tinaz is a neuroscientist and movement disorders specialist whose research focuses on how exercise affects the brain itself. Together, they share results from a pilot study using MRI and PET imaging that showed increased dopaminergic signals after six months of high-intensity exercise. They unpack what those brain changes may mean, why effort matters more than perfection, and how exercise can improve movement, cognition, independence, and quality of life. Topics Covered High-intensity exercise as a disease-modifying strategy for Parkinson’s Brain imaging evidence of exercise-driven neuroprotection Why effort and self-efficacy change outcomes in chronic disease How exercise compares to medication in Parkinson’s treatment Early warning signs, prevention, and environmental risk factors Resources Mentioned Beat Parkinson’s Today Parkinson’s Foundation Community Highlight Yvette Lepore has been fired for watching the CrossFit Games at work. She’s worked 60- to 80-hour weeks, missed Christmas with her family, burned out in corporate America, and come back from a serious medical emergency that forced her to step away from her career. Through all of it, she never missed a workout. Not because she was chasing PRs, but because it was the one place she felt steady when everything else wasn’t. Now she’s retired from corporate life, getting her Level 1, and stepping back onto the coaching floor so she can pay it forward. — CrossFit is the world’s leading platform for improving health and performance. In the 20 years since its founding, CrossFit has grown from a garage gym in Santa Cruz, California, into the world’s most effective program for improving health and performance through nutrition and exercise. CrossFit is the world’s leading provider of accredited performance-based training courses and certifications and has more than 125,000 credentialed coaches across the world. The program can be modified to welcome people of all ages and abilities and millions of people have already experienced CrossFit’s transformational benefits in more than 13,000 affiliated gyms across 158 countries. CrossFit also directs the CrossFit Games season, beginning with the annual CrossFit Open, through which athletes at every level compete worldwide, and culminating in the CrossFit Games, where top athletes compete for the title of Fittest on Earth®. Learn more about CrossFit → https://www.crossfit.com/what-is-cros... Find a CrossFit gym near you → https://www.crossfit.com/map?utm_sour... Find CrossFit Courses near you → https://www.crossfit.com/courses-near... View CrossFit workouts → https://www.crossfit.com/workout?utm_... Subscribe to CrossFit email newsletters → https://www.crossfit.com/newsletters/... Learn more about the CrossFit Games → https://cf.games/games-learn-more