Day 10: BMR Explained | The Calories You Burn Just Staying Alive
Welcome back to Day 10 of the RAC Summer Recomp Series.
Have you ever wondered where most of the calories you burn each day actually come from? Most women assume it's their workouts, cardio sessions, or step count, but the truth may surprise you.
In today's episode, we're breaking down BMR (Basal Metabolic Rate), the largest component of your metabolism and the foundation of body recomposition, fat loss, muscle gain, and long-term metabolic health.
Your BMR is the number of calories your body burns simply to stay alive. Every heartbeat, breath, hormone produced, cell repaired, and thought you think requires energy. In fact, for most women, 60–70% of total daily calorie burn comes from BMR alone, making it the single biggest contributor to metabolism.
We'll also get into one of the most common fitness myths: "My metabolism is broken." You'll learn why metabolism doesn't suddenly stop working after 35, what research actually says about aging and calorie burn, and why years of chronic dieting can make fat loss feel harder than it should.
In this episode you'll learn:
What BMR (Basal Metabolic Rate) actually is
Why BMR accounts for most of the calories you burn each day
How your body burns calories even when you're resting
Why muscle mass plays a major role in metabolism
What actually influences metabolic rate after 35
The difference between metabolic adaptation and metabolic damage
How chronic dieting, under-eating, and excessive cardio can slow progress
Why strength training is one of the most powerful tools for improving body composition
The truth about "boosting metabolism" and what actually works
If your goal is to lose fat, build muscle, increase metabolism, improve hormonal health, reverse years of chronic dieting, and create a lean, toned physique after 35, understanding BMR is one of the most important concepts you'll ever learn.
Today's 3 Daily Targets
Hit your protein goal
Complete your strength training workout
Take a 20-minute walk
Tomorrow we'll continue Metabolism Week by diving into NEAT (Non-Exercise Activity Thermogenesis) the calorie-burning power of everyday movement and one of the most overlooked factors in fat loss and body recomposition.
Need a workout program designed specifically for body recomposition?
The RAC Recomp Collective
Strength training for women 35+ who want to build muscle, lose fat, improve metabolism, and finally achieve the toned, athletic look they're after.
Join here:
https://www.trainerize.me/profile/racfitnessmn/?planGUID=2e2dba89a93e4acdb840fd9fa8e25d40
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Need custom macros?
For a personalized RAC Macro Formulation including calories, protein, carbs, fats, BMR, TDEE, carb tolerance analysis, and macro type recommendations, email:
RACrecomposition@gmail.com