Six Minute Mile

Dr. Jonathan Scheiman - CEO of FitBiomics

Today on the podcast, we’re joined by Dr. Jonathan Scheiman - CEO of FitBiomics. In this conversation, David and Jonathan discuss the fascinating world of gut health and the microbiome, focusing on its implications for endurance athletes. They discuss the unique microbiomes of elite athletes, the role of the microbe Veillonella in enhancing performance and recovery, and the broader impacts of gut health on overall well-being and longevity. The discussion also touches on the challenges of microbiome research, the importance of diet and lifestyle in maintaining gut health, and the innovative approaches FitBiomics is taking to translate scientific discoveries into practical health solutions. SMM listeners can pick up FitBiomics’ microbiome supplements for 30% off. Just use code 6MINMILE at checkout [https://fitbiomics.com/pages/six-minute-mile-x-fitbiomics-landing-page?_ab=0&key=1762194177746].

Grayson Murphy - Pro Runner & Entrepreneur

Today on the podcast, we're joined by Grayson Murphy - Pro Runner & Entrepreneur. Grayson shares her journey through pregnancy while navigating her athletic career as a professional runner. She discusses the emotional complexities of being pregnant, the challenges of maintaining her athletic performance after being diagnosed with Crohn’s disease, and the importance of mental health support. Grayson emphasizes the significance of listening to her body, the role of sleep in recovery, and the benefits of journaling for athletes. She also talks about her coaching philosophy for athletes and the importance of cross-training. In addition to her illustrious running career, Grayson is the founder and co-owner of Wild Strides Paper Co. - maker of stationery and paper products for athletes. Be sure to check out their store [https://wildstridespaper.com/] at https://wildstridespaper.com/ You can also check out her Instagram (@racin__grayson) [https://www.instagram.com/racin__grayson/?hl=en] and leave her a question or comment about the episode!

Dr. Marc Bubbs - Sports Nutritionist

Today on the podcast, we’re joined by Dr. Marc Bubbs – a sports nutritionist and the Co-Founder of ProBio Nutrition [https://www.probionutrition.com/products/problend?discount=smm26]. For over 20 years, Dr. Bubbs has worked with pro athletes and executives to deliver the highest standard in coaching and nutrition. In our conversation, he shared tons of valuable insights on a wide range of topics—everything from the role of protein in our diet, the importance of resistance training as we age, the role of supplements like ProBlend [https://www.probionutrition.com/products/problend?discount=smm26], and more. This is a must listen for runners and endurance athletes who’ve got questions about nutrition and supplements. We hope you enjoy and be sure to follow @drbubbs [https://www.instagram.com/drbubbs/?hl=en] on Instagram to see more of Marc’s content. P.S: New purchasers of ProBlend can lock in 26% off all orders in 2026 with code smm26 - Click here to shop [https://www.probionutrition.com/products/problend?discount=smm26]!

Best of 2025

2025 was a big year for the SMM Podcast, so we compiled some of the best moments into a single episode. Check it out to hear advice on running, nutrition, and wellness from all 13 of this year's guests.

Lauren Puretz - Ultrarunner and Gynecologist

Today on the Podcast, David and Ashley are joined by Lauren Puretz - Ultrarunner and Gynecologist. Together, they explore the intersection of a high-pressure medical career, motherhood, and endurance training. Lauren shares how she balances these roles, offering a refreshing perspective on why maintaining personal goals makes her a better parent and recounting the emotional experience of crossing the UTMB finish line with her children. Drawing from her medical expertise, Lauren provides candid advice specifically for female runners. She breaks down essential topics often left undiscussed, including bladder management during races, the importance of strength training as hormones shift, and practical tips for preventing chafing. Plus, she reveals her surprising strategy for quieting negative self-talk during long ultras: zoning out with entertaining audiobooks.