Morning runners will skip a pre-run snack for many reasons: gut comfort, time constraints, or the belief that running fasted will make them faster. For years, fasted running was trendy and even recommended. However, science and training theory evolve, and so we’re here to tell you in 2025: fed is fastest, and that includes during training.
We address some common misconceptions around fasted running. Does fasted cardio make you a better fat burner - and does that even matter for running performance? Are there any downsides to running without carbs in the tank? We dive into the research around fasted running and make practical recommendations. Whether you are running for health or marathon training, you will want to listen to this episode!
In this episode, you will learn:
Understanding reasons why runners train fasted
The research behind why fasted running may be holding you back
Quick and easy-on-the-stomach pre-run snacks
Is it okay to skip fuel for an easy run?
Does eating before a run affect training adaptations?
How to train your gut to tolerate pre-run eating
If you enjoyed this episode, you may also like:
Hybrid Training as Health Training wiht Dr. Alyssa Olenick (82)
Is Sugar Bad for Runners? With Cortney Berling, RD, MPH (98)
What to Eat Before Runs, Recovery Nutrition, and Low Energy Availability (76)
Ketones, Sodium Bicarb, and Other Supplements for Runners (106)
This episode is sponsored by Previnex! Previnex creates clinically effective supplements made with high-quality ingredients. Their probiotic provides 30 million CFUS with six bacteria strains - and unlike other brands, their probiotic works! Use the code treadlightly for 15% off your first order at previnex.com.
BodyBio: If you are searching for a flavorless electrolyte, consider BodyBio E-lyte! Use code AMANDA25 and follow link to bodybio.com to try E-lyte electrolyte concentrate for your summer hydration needs.
References:
- PMID: 32702658
- PMID: 28012184
- PMID: 38201996
- PMID: 33198277
- PMID: 32021500
- PMID: 40073985
- PMID: 39842253
- PMID: 39840806
- PMID: 32926647
- PMID: 33105701
- PMID: 32079327
- PMID: 32245088
💻 Join our community at patreon.com/treadlightlyrunning
🎙️ Please rate, review, and subscribe on Apple Podcasts or follow and comment on Spotify. If you enjoyed this episode, please share with a friend!
👉 Follow us @treadlightlyrunning @runtothefinish and @lauranorrisrunning on Instagram!
Popular Podcasts
Are You A Charlotte?
In 1997, actress Kristin Davis’ life was forever changed when she took on the role of Charlotte York in Sex and the City. As we watched Carrie, Samantha, Miranda and Charlotte navigate relationships in NYC, the show helped push once unacceptable conversation topics out of the shadows and altered the narrative around women and sex. We all saw ourselves in them as they searched for fulfillment in life, sex and friendships. Now, Kristin Davis wants to connect with you, the fans, and share untold stories and all the behind the scenes. Together, with Kristin and special guests, what will begin with Sex and the City will evolve into talks about themes that are still so relevant today. "Are you a Charlotte?" is much more than just rewatching this beloved show, it brings the past and the present together as we talk with heart, humor and of course some optimism.
On Purpose with Jay Shetty
I’m Jay Shetty host of On Purpose the worlds #1 Mental Health podcast and I’m so grateful you found us. I started this podcast 5 years ago to invite you into conversations and workshops that are designed to help make you happier, healthier and more healed. I believe that when you (yes you) feel seen, heard and understood you’re able to deal with relationship struggles, work challenges and life’s ups and downs with more ease and grace. I interview experts, celebrities, thought leaders and athletes so that we can grow our mindset, build better habits and uncover a side of them we’ve never seen before. New episodes every Monday and Friday. Your support means the world to me and I don’t take it for granted — click the follow button and leave a review to help us spread the love with On Purpose. I can’t wait for you to listen to your first or 500th episode!
Dateline NBC
Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations. Follow now to get the latest episodes of Dateline NBC completely free, or subscribe to Dateline Premium for ad-free listening and exclusive bonus content: DatelinePremium.com