HAVIT Blog
Science-backed guides on habits, sleep, nutrition, and movement.
All articles
Gratitude Journaling Frequency and Neuroplasticity: What fMRI Research Reveals About Optimal Practice
Writing gratitude entries 3 times weekly produces stronger neuroplasticity effects than daily journaling by preventing hedonic adaptation.
Green Tea Catechins: The Brewing Science Behind Better Hydration and Metabolism
Brewing green tea at 70-80°C for 3-5 minutes extracts maximum EGCG for metabolism benefits while preserving its hydrating properties.
Green Tea's Fat-Burning Promise: What 49 Clinical Trials Actually Show About EGCG
Green tea catechins produce modest but real fat oxidation benefits—about 1.4kg over 12 weeks—but only under specific conditions most people miss.
Grief Period Exercise: How to Modify Your Workouts When Loss Hits Hard
During acute grief, cutting workout intensity by 40-60% while maintaining movement frequency actually accelerates emotional recovery better than pushing through or stopping entirely.
Grip Strength Predicts Mortality Better Than Blood Pressure: Training Guide by Age
Your handgrip strength is one of the strongest predictors of how long you'll live—and unlike genetics, you can actually train it.
Why Grocery Shopping Hungry Leads to Impulse Buying (And 5 Pre-Shopping Fixes That Actually Work)
Eating a 200-calorie snack 30 minutes before shopping reduces junk food purchases by 40% by lowering ghrelin-driven reward seeking.
Your Gut Makes 90% of Your Serotonin: The Science Behind Mood and Microbes
Your intestinal bacteria manufacture 90% of your body's serotonin, and specific dietary changes can optimize this gut-brain communication for improved mood.
Why Your Friend Thrives on Fiber While You Just Get Bloated: The Gut Enterotype Guide
Matching prebiotic types to your gut enterotype can improve digestive outcomes by up to 2.4x compared to generic fiber recommendations.
Gut Hormones and Appetite Regulation: How GLP-1, PYY, and CCK Control Your Hunger
Your gut releases specific hormones after eating that tell your brain to stop—and certain foods trigger stronger signals than others.
Gut Transit Time: The Missing Variable in Your Fiber Strategy (And How to Find It)
Measuring your personal gut transit time (12-72 hours) lets you choose the right fiber types and amounts instead of following generic recommendations that may backfire.
Habit Discontinuity: Why Life Transitions Are Your Best Shot at Real Change
Life disruptions break old habit cues, creating a 36% higher success rate for new behaviors—here's how to use that window.
Habit Stacking Anchor Habits Protocol: The 2026 Guide to Building Routines That Actually Stick
Your most automatic existing habits are the foundation for building new ones—stack strategically for dramatically higher success rates.
