Doing everything right and still gaining weight, losing pace, and dragging through recovery? After 40, the rules of fueling quietly change, and most runners never get the memo. Registered dietitian, marathoner, and lifting enthusiast Karina Rosser, RDN, LDN, unpacks why the old playbook stops working once hormones start shifting, and what to do about it. From fueling long runs to protecting muscle and bone, this conversation challenges some of the most common beliefs runners hold about food. There is also an honest look at reverse dieting, GLP-1 medications, and the hydration curveballs perimenopause throws on the road. If under fueling has ever cost a run, a race, or a recovery, consider this the permission slip to start eating like the athlete you are. Key Takeaways Why hormonal shifts in perimenopause and menopause change muscle mass, fat storage, and energy (and why the metabolism is not actually broken)Fueling ahead of hunger and thirst, with practical carb targets before, during, and after long runsDaily protein, calcium, and vitamin D targets that protect muscle and bone for runners over 40How to lose weight without sacrificing pace, and when to switch to maintenance before race dayWhat reverse dieting can and cannot do for runnersHydration and electrolyte strategies for hot flashes, heavier sweating, and runners on GLP-1 medicationsGrab and go meal prep staples for busy schedules, plus the one habit that makes it all stick ---------------------------- About Karina Rosser, RDN, LDN Registered/Licensed Dietitian & Health Professional Karina has been a virtual dietitian for over 12 years and has coached 3,000+ clients across sports and performance nutrition, weight management, muscle building, menopause, and GLP-1 nutrition coaching. She's also a busy mom of two, a marathon runner, and a lifting enthusiast. Connect with Karina Instagram: @karinarosser_rdnFacebook: Karina RosserWebsite: www.krnutritionandhealth.com ---------------------------- 👉Free Recovery Smoothie Recipe: https://runnersmoothie.com/ 👟 Free Running Shoe Guide: https://modernrunnershoes.com/ ---------------------------- Follow Me On: 📸 Instagram: sandesh_pandit78 📘 Facebook: sandesh.pandit1