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. 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, 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 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!

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.

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.

In this conversation, Hunter Leininger shares his journey into the world of endurance sports, discussing his early experiences, the influence of his family, and the mental toughness required for ultra running. He emphasizes the importance of gratitude and perspective in overcoming challenges, as well as practical tips for runners, including nutrition and gear recommendations. Hunter also highlights the significance of community and generosity in the sport, and reflects on the deeper motivations behind his adventures.

Today on the podcast, we're rejoined by Allen Lim - Founder of Skratch Labs. We spoke to Allen about a year ago, and he dropped so much hydration wisdom the first time, we had to invite him back for another hour. This time, David and Allen explore the themes of community, identity, and the complexities of endurance sports. They discuss the importance of hydration, nutrition, and mental health in athletic performance, while also reflecting on personal journeys and the influence of sports on youth. The conversation highlights the need for better infrastructure to support outdoor activities and the role of sports in fostering connection and resilience.

Today on the podcast, we're joined by Arielle Knutson - CEO of Oiselle. Arielle discusses her journey into the running apparel industry, the importance of community in running, and how Oiselle distinguishes itself as a brand by women for women. She shares insights on the emotional connection runners have with their sport, the role of brand identity, and the challenges of building a brand in a competitive market. Arielle also reflects on her personal running experiences and the significance of inclusivity in the running community.

Today on the podcast we're joined by Darcy Piceu - Ultrarunner and therapist. Darcy has a number of high profile race wins under her belt, including three Hardrock 100 wins and several FKTs. In this conversation, David and Darcy explore the parallels between long-distance running and life, emphasizing the importance of mindfulness and enjoying the journey rather than fixating on the end goal. She shares personal insights on overcoming self-doubt and the significance of staying present in the moment. We hope you enjoy!

Today on the podcast we spoke to Keira D’Amato - author of Don't Call It a Comeback. In this conversation, Keira shares her journey as a masters runner, reflecting on her achievements, the importance of community, and the balance between family and running. She discusses her motivation for writing her book, the significance of setting personal goals, and the challenges she faced in her running career. Keira emphasizes the value of injury prevention, recovery, and the role of local running stores in fostering a supportive running community. As she looks to the future, she expresses excitement for upcoming races and the ongoing adventure of running.

Today on the podcast, we’re joined by trail and ultra runner Coree Woltering. He shares insights into his journey in the world of endurance sports, discussing his recent experiences with injuries, the challenges of the Cocodona 250 race, and the mental strategies he employs during long runs. He emphasizes the importance of pacing, nutrition, and the supportive community within ultra running. Coree also reflects on his training regimen, future aspirations, and the significance of maintaining a positive mindset in the face of challenges.

Today on the podcast, we’re joined by Dirk Friel – Co-Founder of TrainingPeaks. We discussed the evolution of endurance coaching, the importance of individualized training, and the role of coaches in helping athletes achieve their goals. We also explored when amateur athletes should seek professional guidance, the significance of consistency and recovery, and how age impacts training strategies. Dirk emphasizes the need for maintaining intensity, especially for masters athletes, and the balance between strength and endurance training. The discussion also highlights the art and science of coaching, advocating for a growth mindset among athletes. The dialogue also touches on personal insights, favorite sports experiences, and the significance of mentorship in an athlete's journey. We hope you enjoy.