317. Marathon Heat Training: The Heat Adaptation Blueprint

317. Marathon Heat Training: The Heat Adaptation Blueprint

Summer isn’t just a season; it’s a high-stakes training block. In this episode, we break down the science of marathon heat training and why you should view these humid months as the "Poor Man’s Altitude." We move past the marketing hype to explore the physiological reality of thermal stress, plasma volume expansion, and why your watch data needs a serious reality check when the mercury rises. In this episode, we cover: * The Physiology of the Heat: Why your heart rate changes which isn't a loss of fitness, blood plasma volume and how you can take advantage of that. * Safety & Red Lines: The critical differences between heat exhaustion and heat stroke, and how to spot the "hidden" dangers of hyponatremia. * The Gear Audit: We demystify fabric technology—why GSM (Grams per Square Meter) matters more than branding, the science behind polyester vs. nylon, and why going shirtless is actually less efficient than wearing high-performance UPF 50+ gear. * Actionable Protocols: How to calculate your personal sweat rate, the 1000mg-per-liter sodium rule, and the "slushie" pre-cooling method to buy yourself an extra 10–15 minutes of threshold performance. * The Effort-First Override: Why you should ditch "Current Pace" on your watch, embrace the 15–40 second per mile "heat tax," and how to use run-walk cycles to stay under your critical temperature ceiling. * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.instagram.com/runningpodcast] * YouTube: https://youtube.com/@marathonjournal [https://www.google.com/search?q=https://youtube.com/%40marathonjournal] * Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.strava.com/athletes/30798607] * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.google.com/search?q=https://www.instagram.com/runningpodcast] Connect with Us: Connect with Us:Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.google.com/search?q=https://www.strava.com/athletes/30798607] *

316. Cupless Racing At Chicago Marathon?

Cupless racing is gaining momentum, with Chicago now introducing refill stations at the Chicago 13.1 and Chicago Marathon to curb the millions of single-use cups discarded at major events. Don't worry, your disposable cups are still there, this is a test, but while the transition raises valid concerns regarding runner gear and congestion, industry experts suggest these are solvable design challenges. Listen in, or Read more, including a full interview on our website marathonjournal.com * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.instagram.com/runningpodcast] * YouTube: https://youtube.com/@marathonjournal [https://www.google.com/search?q=https://youtube.com/%40marathonjournal] * Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.strava.com/athletes/30798607] * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.google.com/search?q=https://www.instagram.com/runningpodcast] Connect with Us: Connect with Us:Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.google.com/search?q=https://www.strava.com/athletes/30798607]

315. The Science Behind the Maurten Bicarb System with Josh Rowe

*This episode is NOT sponsored by Maurten* We at Marathon Journal are just very curious about new systems of administration and sciene. In this episode, we sit down with Josh Rowe to explore the science behind the Maurten Bicarb System and why sodium bicarbonate has become one of the most talked-about topics in endurance performance. We discuss: - how bicarbonate buffering works- why acidity contributes to fatigue- the history of sodium bicarbonate in sports science- why traditional bicarbonate caused major GI distress- how hydrogel delivery systems aim to improve absorption and tolerability- what types of runners and workouts bicarbonate may benefit- threshold training, marathon racing, and high-intensity applications -published scientific studies surrounding hydrogel bicarbonate systems- the growing role of delivery science in endurance nutrition This conversation focuses on the physiology, performance science, and practical application behind bicarbonate supplementation—not hype, but the evolving intersection of sports science, engineering, and endurance performance. Connect with Us: * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.instagram.com/runningpodcast] * YouTube: https://youtube.com/@marathonjournal [https://www.google.com/search?q=https://youtube.com/%40marathonjournal] * Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.strava.com/athletes/30798607] * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.google.com/search?q=https://www.instagram.com/runningpodcast] Connect with Us:Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.google.com/search?q=https://www.strava.com/athletes/30798607]

314. Run Stronger, Live Longer: Cracking the Menopause Bone Health Code

In this episode, host Letty sits down with Angela M. Sterious, a dual-certified family and psychiatric mental health nurse practitioner with over 30 years of medical experience, to tackle a crucial but often ignored aspect of women’s health: menopause and its hidden impact on bone density. Angela breaks down the biological changes that occur as women age, highlighting how the dramatic drop in estrogen during perimenopause and menopause leads to rapid bone loss. Designed especially for runners and active individuals aged 35 and up, this conversation sheds light on why early awareness and proactive lifestyle shifts are essential for maintaining a long, thriving "health span". Listeners will learn practical, non-pharmaceutical strategies to protect their skeletal systems, including the critical role of clean nutrition, high protein intake, and targeted vitamin supplementation. Angela explains how the high-impact nature of running, combined with heavy weight training and "exercise snacks" like deadlifts, naturally stimulates bone growth and prevents dangerous fragility fractures. The episode also demystifies hormone replacement therapy, discusses necessary blood work panels, and empowers women to take charge of their health so they can continue running strong for decades to come.

313. The Psychology of Becoming a Runner (Identity, Consistency & Comparison)

In this episode, Letty sits down with Claire Boyce to explore the mental side of running that often gets overlooked. From imposter syndrome and comparison to consistency, burnout, and identity, this conversation goes beyond training plans and pace to uncover what it really means to become—and stay—a runner. They dive into how to handle setbacks, reframe slower seasons, use running as a tool for processing stress, and build a more resilient, flexible mindset that carries over into everyday life. If you’ve ever questioned whether you’re “doing enough” or struggled to stay consistent, this episode will hit home. Our guest can be found here: https://www.instagram.com/upwardsports/ Connect with Us: * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.instagram.com/runningpodcast] * YouTube: https://youtube.com/@marathonjournal [https://www.google.com/search?q=https://youtube.com/%40marathonjournal] * Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.strava.com/athletes/30798607] * Our website: https://www.marathonjournal.com [https://www.marathonjournal.com/] * Instagram: https://www.instagram.com/runningpodcast [https://www.google.com/search?q=https://www.instagram.com/runningpodcast] * Follow us on Strava: https://www.strava.com/athletes/30798607 [https://www.google.com/search?q=https://www.strava.com/athletes/30798607]