# Sweat Loss Tracker: Smart Hydration Monitoring System The Fluid Loss Tracker is an advanced hydration monitoring system for endurance athletes. It combines a Garmin DataField and a companion mobile app (iOS/Android) to deliver real-time, personalised fluid loss estimates during training and racing. If you need help getting started, contact us at [email protected] # Overview This system tracks and predicts your sweat loss during endurance activities such as cycling and running. Using machine learning, it analyses workout data, environmental conditions, and personal physiology to display real-time hydration insights directly on your Garmin device. Note: For best visibility, use the DataField in a 2-field screen layout or on a dedicated screen. # How It Works ## Garmin DataField - Displays real-time fluid loss estimates on your bike computer - Shows temperature and location information when available - Collects live activity metrics and sends them to the mobile app - Receives calculated fluid loss predictions from the app ## Companion App (iOS & Android – BETA) - Uses machine learning to calculate personalised fluid loss estimates - Analyses metrics such as heart rate, power, speed, temperature, humidity, and duration - Displays live and historical workout statistics - Stores activity history for continuous model improvement - Adapts to multiple activity types including road cycling, mountain biking, indoor training, and running # Key Features ## Real-Time Monitoring - Continuous data transmission between Garmin device and smartphone via Bluetooth - Live fluid loss estimates updated automatically during workouts ## Smart AI Predictions - Cloud-based machine learning models analyse more than 15 physiological and environmental metrics - Three model tiers: - Pre-trained: Generic predictions based on sweat rate categories (light, medium, heavy sweater) - Personalised: Custom model trained on your own historical data - Auto: Automatically selects between personalised and pre-trained models based on activity similarity ## Comprehensive Metrics Dashboard # Benefits - Prevent dehydration during intense workouts - Optimise hydration strategy for race conditions - Understand your personal sweat rate in different environments - Plan fluid intake using data-driven predictions - Learn how physiological and environmental factors affect hydration needs # Technical Details - Uses ConnectIQ SDK for Garmin integration - Implements a dual-platform architecture with synchronised data between device and phone - Features cloud-based machine learning for real-time prediction - Background tracking for continuous operation - Beta available for both iOS and Android platforms # How to Get Started - Install the Fluid Loss DataField on your Garmin device - Download the companion app from the iOS App Store (TestFlight Beta) or Google Play Store (Beta) - Open the app and select your Garmin device from the dropdown - Wait for device connection confirmation (usually under 30 seconds) - Press "Start Tracking" in the app - Begin your activity on the Garmin device with the DataField visible - Monitor real-time fluid loss predictions during your workout For more information, downloads, and support, visit: https://fluidloss.info

V 1.6 Fixed physiological metrics import. Improved metrics for pre-post activity predictions V 1.5 Adaptive Field Layout based on screen size (compact version automatically selected for busy screens or smaller units) V 1.4 Optimised Resource utilisation V 1.3 Added support for Edge 850 V 1.2 improved the way low values of fluid loss are displayed V 1.1 Improved Average Power handling