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The Greenletes Podcast is hosted by Registered Dietitian Natalie Rizzo and features experts from the sports nutrition and fitness industry. Each episode provides plenty of practical nutrition and fitness information for everyday athletes, with a plant-based twist. Natalie interviews dietitians who work with pro athletes, editors for health & wellness magazines, pro trainers, plant-based athletes and more. Whether you're interested in learning how to use nutrition to maximize performance, you're looking for tips on going plant-based or you want to up your fitness game, the Greenletes Podcast has you covered.
62 Episodes
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Natalie sits down with registered dietitian and mom Stephanie Darby to unpack the realities of running after pregnancy, including her experience racing while pregnant, pushing a stroller, and later realizing she had been chronically underfueling. In this conversation, you’ll learn: Why postpartum runners feel wiped out even on short runsHow stroller running increases energy needsSigns you’re not eating enough to support trainingWhy “bouncing back” is a harmful mythHow to rebuild fitness witho...
In this mailbag episode, I answer your real nutrition questions about fueling an active, plant-based lifestyle. We cover how much fat is too little (or too much) for athletes, nutrition tips for perimenopausal women with Hashimoto’s, how to support bone healing after a fracture on a vegetarian diet, and whether relying on soy protein is healthy. Plus, I break down why you might be getting headaches and feeling awful after long endurance workouts—and exactly how to fix it with smarter fueling ...
Plant-based diets are experiencing a surge in popularity, particularly among runners and other athletes. But is your plant-based diet lacking in any nutrients, and do you need supplements to fill the gaps? In this episode, Registered Dietitian Natalie Rizzo breaks down what nutrients plant-based runners might miss, which supplements are actually worth your money, and which ones are marketing fluff. Take the quiz --> Are You Underfueling Your Runs? Leave your questions for next ...
If your runs feel harder than they should, it's probably not your training. You're not fueling enough. In this episode, I break down how runners unintentionally underfuel their workouts, the subtle signs to watch for, and why eating “healthy” isn’t always enough to support performance. I’ll also share how my own first marathon taught me this lesson the hard way and how you can tell if underfueling might be affecting your runs. Take the quiz to find out if you're underfueling -->...
Feeling confused about how to fuel your running on a plant-based diet? In this episode, plant-based sports dietitian and runner Natalie Rizzo shares The Plant-Based Athlete Blueprint, aka the five core principles she teaches all her runners to improve energy, performance, hydration, and recovery. You’ll learn how to fuel at the right times, avoid hitting the wall, hydrate beyond just water, and recover properly so running feels sustainable, not exhausting. Whether you’re new to plant-based ru...
Leave your questions for Natalie here— > https://forms.gle/QtGnRVF7iCR3HVht6 As we close out 2025 and head into a new year, Natalie Rizzo, MS, RD, takes a candid, no-pressure look at what it really means to set goals as a plant-based runner, without the overwhelm of highlight reels and unrealistic resolutions. In this episode, Natalie reflects on how she fueled her running while juggling life with two young kids, what she learned about performance nutrition, and how simple, consisten...
Natalie sits down with Kristy Bauman, RDN—aka @marathon.nutritionist—to bust the most common (and confusing!) fueling myths runners encounter every day. Kristy breaks down why gut training matters, how dehydration (not gels) is often behind stomach problems, and what most runners get wrong about protein, electrolytes, and carb loading. Natalie and Kristy also dig into common misconceptions around fueling frequency, “sloshy stomach,” salt tablets, caffeine, and the idea that you can skip recov...
In this solo episode, Natalie takes you behind the scenes of her Philly Half Marathon—her 20th half and one of her most meaningful yet. She opens up about setting a bold goal of breaking two hours, the six months of training that led her there, and how becoming a mom reshaped her relationship with running. Natalie shares exactly how she built speed in her 40s, the fueling mistakes she finally corrected, the hill she did not see coming, and why proper hydration and electrolytes completely chan...
In this energizing episode, Natalie talks with the always-vibrant Dawn Jackson Blatner, RDN—dietitian, author, and self-proclaimed joy scientist—about why joy is a skill you can practice, not a personality trait. Dawn shares how hitting her own rock bottom led her to study the science of joy and create a simple daily “Joy GPS” that’s helped her and her clients feel more energized and motivated. They dive into how joy directly supports fueling and fitness—from making nutrition more fun to find...
Many female athletes think losing their period is a normal part of training, but it’s actually a sign their body is under too much stress and not getting enough fuel. In this episode, Natalie Rizzo, MS, RD, sits down with sports dietitian Riley Beatty, founder of the Performance Fueling Club, to talk about hypothalamic amenorrhea (HA), aka losing your period due to underfueling. Riley explains why HA happens, how to spot the warning signs (like fatigue, hair loss, or frequent injuries),...
So many athletes wonder if they can change their body composition—or even lose a few pounds—without tanking their performance. In this episode, Natalie sits down with sports dietitian Alex Larson to unpack the delicate balance between fueling for endurance and reaching body composition goals. They talk about what “race weight” really means, how to avoid common pitfalls like underfueling, how to strategically time carbs and protein, and why food journaling can be a powerful learning tool for a...
In this quick but info-packed episode, host Natalie Rizzo, MS, RD, shares her best fueling strategies for the New York City Marathon—from carb loading to race day breakfast and everything in between. Learn how to plan your pre-race meals, what to eat the night before, and why you’ll need a “second breakfast” before hitting the start line. Natalie also dives into common mistakes runners make on race day (like trying new foods) and how plant-based runners can make sure they’re fueled, hydrated,...
Can you really get faster as you get older? Claire Bartholic, Boston Marathon qualifier, coach, and host of The Planted Runner podcast, proves you can. In this episode, we chat about her running journey from teenage half-marathons to PR’ing and running a sub 3-hour marathon in her 40s and the power of consistent strength training for runners. Plus, Claire shares her top tips for training to get faster, proper recovery, and finding joy in every stage of your running journey. Follow...
🎧 Trigger warning: This episode contains descriptions of childbirth and medical emergencies. In this deeply personal episode of the Greenletes Podcast, host and plant-based sports dietitian Natalie Rizzo opens up about her unexpected health journey following the birth of her second child. Despite a healthy pregnancy and active lifestyle, Natalie experienced a series of complications after a planned C-section, including a severe uterine hemorrhage and a life-threatening pulmonary embolism (PE)...
The Greenletes Podcast is back! Host and plant-based sports dietitian Natalie Rizzo shares what she’s been up to, her latest projects, and how she helps runners and athletes fuel better with plants. Get a preview of exciting new guests and topics coming your way. Have questions or want to request a show topic? DM us @greenletes Check out Natalie's book 📕: Planted Performance
Natalie speaks with Registered Dietitian and Diabetes expert Erin Palinski-Wade to get to the bottom of blood sugar for athletes. They discuss: Why athletes are wearing continuous glucose monitors and whether or not they are recommended for all athletes Do spikes in blood glucose do any long-term damage to the body?Is your insulin sensitivity heightened during the anabolic window, and does this help with muscle building? What is the glycemic index and why do people talk about it so...
McKale Montgomery is an Assistant Professor at Oklahoma State University, as well as a nutritional science researcher. She specializes in iron, specifically how changes in cellular iron affect disease progression. She's also a competitive marathon runner. In this episode, we chat about: How she started running and her journey to the Olympic TrialsHow she balances mom-ing (yes, it’s a verb), work, and competitive runningWhy iron is her favorite nutrientDo runners lose more iron than ever...
Dr. Kensa Gunter is a clinical and sport psychologist based in Atlanta, GA where she provides individual counseling, mental skills training, and consultation services to athletes and organizations. In this episode, we discuss: how psychological factors play into sportwhether or not athletes are open to mental health discussionshow to manage pre-competition anxietyHow the idea of perfectionism play into an athlete’s mental healthHow athlete’s can balance the idea of wanting to win/be the best ...
Natalie chats with Vic Johnson, a nutrition coach for outdoor athletes and an outdoor endurance athlete, who has competed in trail and ultra running, triathlons, and cycling. They discuss: What are some special nutrition considerations for mountain sports? Should you just rely on carbohydrates for fuel? Should you add in other nutrients besides carbs? What nutrients the body relies on for lower intensity exercise.How to you carry fuel and hydration with you during long outdoo...
In this episode, Sports RD Natalie Rizzo answers your burning questions. She chats about: whether or not vegans need to supplement with Vitamin B12 and how much to takehow to fuel two-a-days why you may be hungry at night on a plant-based dietdo men have a faster metabolism than women?Submit your questions for a future Q&A here! Have questions or want to request a show topic? DM us @greenletes Check out Natalie's book 📕: Planted Performance
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