Withings Integration: How Body Composition and Sleep Data Reveal Your Mood Patterns

Your body tells a story every day — through your weight, your sleep, your heart rate, your blood pressure. With FeelTrack’s new Withings integration, that story connects directly to your emotional well-being.

Why Withings + FeelTrack

Withings products are uniquely positioned in the health data landscape. Where most wearables focus on activity and exercise, Withings excels at the metrics that happen at rest — body composition from smart scales, sleep architecture from sleep trackers, and cardiovascular health from blood pressure monitors.

These are exactly the metrics that research links most strongly to mood. Weight fluctuations affect body image and self-perception. Poor sleep disrupts emotional regulation. Elevated resting heart rate correlates with anxiety. FeelTrack connects these dots automatically.

What Data We Connect

When you connect your Withings account, FeelTrack pulls data from any Withings product you own:

From Smart Scales (Body+, Body Comp, Body Scan)

• Weight — daily measurements and trends
• Body fat percentage — composition changes over time
• Muscle mass — lean mass tracking
• BMI — automatically calculated
• Heart rate — pulse measured during weigh-ins

From Sleep Tracking (Sleep Analyzer, Sleep)

• Sleep duration — total hours asleep
• Sleep phases — light, deep, and REM stages
• Breathing disturbances — respiratory events during sleep
• Heart rate during sleep — nocturnal heart rate patterns

From Health Monitors (BPM Core, BPM Connect)

• Blood pressure — systolic and diastolic readings
• SpO2 — blood oxygen saturation
• Body temperature — skin temperature variations

The Mood Connection

FeelTrack’s correlation engine analyzes your Withings data alongside your daily mood check-ins. After a few weeks of connected data, patterns emerge:

• “Your mood scores drop an average of 18% after nights with less than 6 hours of sleep”
• “Weeks where your weight is stable correlate with 12% higher positive affect”
• “Your resting heart rate tends to be elevated 24-48 hours before your lowest-mood days”

These insights are computed from your data — not population averages. They reflect your unique body-mood relationship.

How to Connect

1. Go to Settings > Health Integrations
2. Click Connect next to Withings
3. Sign in to your Withings account and authorize FeelTrack
4. Your health data starts flowing in automatically

FeelTrack requests read-only access to your Withings health data. We never modify your measurements or account settings.

Privacy First

Your Withings data flows directly from Withings servers to FeelTrack. No aggregators, no middleware, no third parties. We store only the health metrics needed for mood correlation — never your raw measurement files or account details.

You can disconnect at any time, and all synced data is permanently deleted.

Demo Mode for Testing

New to Withings? You can test the integration using Withings’ built-in demo mode, which provides sample health data without requiring a physical device. This lets you explore the Health Dataroom and see how the correlation engine works before investing in hardware.

Part of the Bigger Picture

Withings joins Fitbit and Strava as our third live health integration. Together, they cover the full spectrum of mood-relevant health data:

• Strava — workout intensity and exercise patterns
• Fitbit — sleep stages, steps, HRV, and daily activity
• Withings — body composition, sleep quality, and cardiovascular health

With Oura, Whoop, and Garmin coming next, FeelTrack is building the most complete picture of how your physical health shapes your emotional life.

Get Started

Head to your integrations page and connect your Withings account. If you’re new to FeelTrack, start your free 30-day trial.

Your body has been collecting data about your well-being for years. Now you can finally see what it’s been trying to tell you.

FeelTrack integrates directly with the Withings API. All data transfers are encrypted via OAuth 2.0. No third-party services are involved. Withings is a trademark of Withings SA.