Is weight loss really just about eating fewer calories than you burn? In this clip, Dr. Kevin Hall breaks down the truth behind the popular “calories in, calories out” model and why the classic 3,500-calorie-per-pound rule doesn’t work the way many people think it does. Your body isn’t a static math equation. When you cut calories, metabolism adapts, energy expenditure changes, and appetite can shift. Here’s what the science actually says about energy balance and long-term weight loss. What You’ll Learn 🔥 Why the 3,500 calorie rule doesn’t accurately predict weight loss ⚖️ How calorie intake and calorie burn interact dynamically 📉 Why metabolism adapts when you reduce calories 🧠 How the body responds to energy deficits over time 📊 What “calories in, calories out” really means in practice ▶️ Watch the Full Episode at the link in bio! #WeightLoss #CaloriesInCaloriesOut #Metabolism #NutritionScience #FatLoss #DietMyths #EnergyBalance #EvidenceBasedNutrition