HAVIT Blog
Guides fondés sur la science pour les habitudes, le sommeil, la nutrition et le mouvement.
Récents · 98 articles
Why Your Oura Ring Readiness Score Tanks During Menopause (And What to Do About It)
Vasomotor symptoms like hot flashes trigger false 'poor recovery' signals in Oura Ring data—here's how to read your metrics differently during menopause.
Pixel Watch 3 Stress Detection: How Accurate Is Google's Electrodermal Activity Sensor Really?
Google's Pixel Watch 3 cEDA sensor detects stress responses with roughly 73% accuracy in controlled settings, but real-world performance varies significantly based on movement, temperature, and individual physiology.
Polar H10 Chest Strap vs Optical Heart Rate: Why Intervals Demand Better Sensors
Optical wrist sensors lag 8-17 seconds during intervals and miss heart rate peaks, making chest straps essential for accurate zone-based HIIT training.
Polar Vantage V3 Orthostatic Test: The 3-Minute Morning Ritual That Changed How I Train
The orthostatic HRV test measures your nervous system's response to standing—giving you actionable training guidance in under 3 minutes each morning.
Post-Meal Glucose Spikes in Non-Diabetics: What 140 vs 160 mg/dL Actually Means for Your CGM Data
For non-diabetics, post-meal spikes under 140 mg/dL are optimal, but occasional readings up to 160 mg/dL aren't cause for alarm—context and recovery time matter more than peak numbers.
CGM vs Fasting Glucose for Prediabetes Screening: Why Your Morning Test Misses the Early Signs
CGM detects post-meal glucose spikes that signal prediabetes risk years before fasting glucose becomes abnormal, offering a crucial early warning window.
Protein Intake Tracking: How to Actually Hit Your Daily Target (Without Obsessing)
Distribute protein across 4-5 eating occasions with 25-40g per meal, track for 2 weeks to build intuition, then simplify to palm-sized portions.
What Your Respiratory Rate During Sleep Reveals About Health Changes Coming
Elevated respiratory rate during sleep often signals illness, stress, or cardiovascular changes days before you feel symptoms—making it one of the most predictive metrics your wearable tracks.
Your Breathing Rate During Sleep Might Predict Illness 48 Hours Early
A gradual rise in your nighttime breathing rate often signals incoming illness 1-2 days before you feel sick, making it one of the most reliable early warning biomarkers available through wearables.
Reading Your Resting Heart Rate Trends: A Guide to Spotting Illness and Overtraining Early
Your resting heart rate tells a story—weekly spikes signal acute stress while monthly drift reveals chronic overtraining or brewing illness.
Your Wearable Knows What That Late-Night Scroll Costs You: Screen Time and Sleep Quality Data
Wearable data from 14,000+ nights shows each 30 minutes of pre-bed screen time adds 8 minutes to sleep latency and cuts deep sleep by 4%.
What Wearable Skin Temperature Tracking Actually Reveals About Your Body
Distal skin temperature patterns can reveal circadian alignment issues, pinpoint ovulation within 24 hours, and detect illness onset up to 2 days before symptoms appear.