Metabolism 101 (The Science Behind Fat Loss and Muscle Building) | Ep 421
Wits & Weights | Evidence-Based Fitness & Nutrition for Lifters Over 40
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Show Notes
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Why do some people eat more and stay lean while others diet nonstop and still struggle? Is your metabolism actually slow, or have you trained it to fight you?
I dive into the real science of metabolism, body recomp, and why most weight loss strategies fail long-term. The focus shifts away from eating less and toward building a body that can lose fat, build muscle, and handle more food without constant plateaus. I explain why chronic dieting backfires, how strength training reshapes metabolic behavior, and why metabolism is adaptive, not fixed.
I cover the four components of metabolism, why NEAT quietly drives fat loss, and why muscle is the biggest long-term lever for fat loss, muscle building, and strength training over 40. You’ll also hear about a zero-time habit that can add up to 9,000 calories of monthly burn without changing your schedule.
If you want evidence-based nutrition that actually works, this is where it starts.
Today, you’ll learn all about:
0:00 – Why metabolism isn’t genetics
3:02 – What metabolism really is
7:20 – The four components explained
11:55 – Why NEAT drives fat loss
18:34 – How muscle changes metabolism
24:19 – Why dieting backfires long term
28:12 – Recover before cutting
32:13 – Build metabolic capacity
39:03 – The zero-time calorie burn habit
Episodes mentioned:
- Why Building Muscle Beats Weight Loss for Body Recomp | Ep 418
- The Body Recomposition Blueprint (Recomp to Build Muscle and Lose Fat at the Same Time) | Ep 166
💪 Join Eat More Lift Heavy - A 6-month coaching program for lifters over 40 who are done collecting information and ready to have real human coaches watch their data and know what to focus on each week.
📱 Get Fitness Lab (exclusive 20% off) - The #1 adaptive fitness and nutrition app. Daily coaching, workouts, and biofeedback-based guidance to help you build muscle and lose fat over 40.
👥 Join our Facebook community - For adults over 40 who want to build muscle, lose fat, and stop following bad advice. Weekly Q&A threads, coaching insights, and real chat with other lifters.
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