038: What Emma Navarro's RED-S Teaches Midlife Women | Kristin Collins
Constant fatigue, trouble sleeping, frequent injuries, and a shorter fuse than usual can all be signs you're not eating enough. When American tennis player Emma Navarro shared in 2026 that she had been diagnosed with Hashimoto's and RED-S, or relative energy deficiency in sport, it put a name to what happens when you chronically burn more energy than you take in. You don't have to be a pro athlete for this to apply to you. If you're a midlife woman playing tennis or pickleball, running, doing Pilates, ferrying kids everywhere, and running your job, your house, and your family, you may be under-fueling for the life you're actually living.Kristin Collins, nutrition and body composition coach for midlife women and host of Eat the Fcking Food, explains what RED-S is, the real-world symptoms of under-fueling, and why she believes women are hit harder after a lifetime of messages that tie our worth to the number on the scale. She defines maintenance calories, the amount of food you need every day to meet your energy needs without the scale moving, and shares how she went from eating 1,400 to 1,600 calories a day to adding 400 to 600 more. Her sleepless nights and digestive issues disappeared, her menopause symptoms eased, and she recovers faster on the tennis court. If you're tired of feeling sick and tired, it's time to eat the fcking food.In this episode, you’ll discover:What RED-S, or relative energy deficiency in sport, actually is, and why burning more energy than you eat leads to fatigue, injuries, poor sleep, and mood changes in women.The signs you're not eating enough to watch for in midlife, from constant tiredness and trouble sleeping to anxiety, rage, brain fog, and hair loss, even if you're not a competitive athlete.What maintenance calories are, and why knowing how much food keeps your weight steady, your sleep solid, your digestion happy, and your hands and feet warm is the foundation of any goal.Why cutting calories or carbs based on a feeling instead of your actual numbers can cost you fiber, heart health, and thyroid health, and makes healthy eating impossible to sustain.How Kristin Collins added 400 to 600 calories to her old intake of 1,400 to 1,600 a day, and what changed for her sleep, digestion, menopause symptoms, and tennis game.Why under-fueling affects female athletes more than male athletes, and how decades of tying worth and health to body size keep midlife women eating less than their bodies need.A quick body check-in that reveals signs you're not eating enough, and why fueling your real energy needs is how you stay strong and independent as you age.We talk about:00:00 Why this tennis story applies to every woman00:42 Emma Navarro shares her Hashimoto's and RED-S diagnosis02:05 What is RED-S and how does under-fueling happen02:55 Signs you're not eating enough, from fatigue to rage04:00 Why busy midlife women need more fuel, not less04:50 What are maintenance calories and why do they matter06:10 Kristin's story of eating 1,400 to 1,600 calories07:23 What changed when she ate 400 to 600 more calories08:24 Why cutting carbs and calories blindly backfires09:51 Why does under-fueling hit women harder than men11:37 A quick body check-in to spot under-fueling13:22 Why the holidays are the best time to startReady to find your maintenance calories before the holidays? Email Kristin at [email protected] or send her a message on Instagram to get started.Connect with meInstagram: https://www.instagram.com/kristinrcollins/ YouTube: https://www.youtube.com/@kristin.collins Website: https://kristincollinshealthcoaching.com/ #MidlifeNutrition #UnderFueling #REDS #RelativeEnergyDeficiency #EmmaNavarro #WomenOver40 #WomenOver50 #MaintenanceCalories #EatMore #AntiDiet #AntiDietCulture #MenopauseNutrition #WomensTennis #PickleballLife #WomenWhoLift #FuelYourBody #WomensHealth #MidlifeWomen #EatTheFuckingFood