HAVIT Blog
Guias baseados em ciência sobre hábitos, sono, nutrição e movimento.
Recentes · 107 artigos
Artificial Sweeteners and Your Metabolism: What 2025 Research Reveals About Zero-Calorie Sweeteners and Insulin Response
Zero-calorie sweeteners aren't metabolically neutral—they alter gut bacteria and may trigger insulin responses even without sugar.
Body Recomposition in a Calorie Deficit: When You Can Actually Build Muscle While Losing Fat
Body recomposition is real but requires a modest deficit (300-500 calories), high protein (1.6-2.2g/kg), resistance training, and works best for beginners or those returning after a break.
Body Recomposition in 2026: The Science of Losing Fat and Building Muscle at the Same Time
Body recomposition is possible for specific populations using precise protein timing, moderate caloric deficits, and resistance training—but it's slower than traditional cut/bulk cycles.
Body Recomposition: How to Lose Fat and Gain Muscle at the Same Time in 2026
Body recomposition is real but works best for beginners, returners, and those with higher body fat—requiring precise protein timing and strategic calorie cycling.
Body Set Point Theory vs. Settling Point: What Science Actually Says About Your Weight in 2026
Your body doesn't lock onto one fixed weight—it defends a range that shifts based on environment, habits, and time, which means change is harder but absolutely possible.
Brown Fat Activation Through Cold Exposure: How Many Calories Does It Actually Burn?
Cold exposure activates brown fat to burn 100-300 extra calories daily, but the protocol matters more than the shiver.
Brown Fat Activation Through Cold Exposure: The Science-Backed Protocol for Boosting Metabolism in 2026
Cold exposure at 60-66°F for 2+ hours daily can activate brown fat and increase calorie burn by 100-200 calories, but the protocol matters more than intensity.
Brown Fat and Cold Exposure: What 150 Calories Really Means for Weight Loss
Cold exposure does activate brown fat, but the calorie burn is modest—roughly 100-200 extra calories daily under optimal conditions, not the metabolic miracle social media promises.
Caffeine and Metabolism: Why Your Morning Coffee Stopped Working (And How to Fix It)
Caffeine increases metabolic rate by 3-11%, but tolerance develops within 1-4 weeks; strategic cycling protocols can preserve these benefits indefinitely.
Caffeine, Fat Burning, and the Tolerance Trap: Why Your Coffee Stops Working
Caffeine boosts fat oxidation by 10-29%, but tolerance develops within 1-2 weeks of daily use—strategic cycling restores its metabolic effects.
Caffeine Metabolism and Weight Loss: Finding Your Optimal Timing and Dose in 2026
Caffeine can boost metabolism by 3-11% and fat oxidation by up to 29%, but timing it 30-45 minutes before activity and matching dose to your CYP1A2 gene status maximizes results.
The Carbohydrate-Insulin Model of Obesity: What the Latest Evidence Actually Shows
New research suggests both models capture partial truths—insulin matters for some people, but total energy intake remains the primary driver for most.