HAVIT Blog
Guides fondés sur la science pour les habitudes, le sommeil, la nutrition et le mouvement.
Récents · 98 articles
Urine Color Hydration Tracking: How Accurate Are Those Charts Really?
Urine color charts are about 70% accurate for detecting dehydration, but timing, diet, and supplements can throw them off significantly.
Urine Color vs. Intake Tracking: What Actually Works for Hydration Monitoring in 2026
Combining morning urine color checks with body weight changes beats intake logging alone for accurate hydration tracking.
Why Identical Twins React Differently to the Same Meal: The PREDICT Study Rewrites Nutrition Science
Your genes explain less than 30% of how your blood sugar responds to food—sleep, meal timing, and gut bacteria matter far more than we thought.
How CGM Reveals Your Personal Metabolic Switch Point During Intermittent Fasting
CGM data shows exactly when your body switches from glucose to fat burning—typically 12-16 hours into a fast—letting you personalize your eating window.
How to Track Medication Timing and Adherence: Finding Your Optimal Dose Windows in 2026
Connecting your medication logs with symptom tracking reveals personal timing patterns that generic schedules miss—here's how to find yours.
Tracking Exercise Performance Across Menstrual Cycle Phases: A 2026 Guide to Smarter Training
Your menstrual cycle creates predictable performance windows—track the right metrics in each phase to train smarter, not just harder.
How to Identify Mood Patterns Through Daily Tracking: The 2-Week Rule That Changes Everything
Track moods for at least 14 consecutive days before drawing conclusions—shorter windows mistake normal fluctuations for concerning patterns.
Morning vs Evening Blood Pressure Difference: What's Normal and When to Worry
A morning blood pressure surge over 20mmHg above evening readings may signal increased cardiovascular risk—tracking both times daily reveals patterns your doctor needs to see.
Multi-Device Wearable Data Consolidation: Creating Your Single Source of Truth Strategy
Pick one 'primary' device per health domain, use aggregator apps for the big picture, and stop chasing perfect accuracy—consistency beats precision.
Why Your Heart Rate Should Drop While You Sleep (And What It Means If It Doesn't)
A healthy heart rate drops 10-20% during sleep; consistently flat nighttime patterns may signal cardiovascular stress worth discussing with your doctor.
Oura Ring 4 Skin Temperature vs BBT Charting: Which Actually Catches Ovulation?
Continuous nighttime skin temperature from Oura Ring 4 detects ovulation patterns with 89% accuracy, outperforming traditional BBT's 78% when accounting for real-world consistency.
Oura Ring 4 Sleep Staging Accuracy: How Close Does It Get to Lab-Grade Polysomnography?
Oura Ring 4 achieves 79% overall sleep staging agreement with polysomnography, with REM detection hitting 82% accuracy but deep sleep lagging at 61%.