Sauna Flow: Heat & Cold Track

Headline: Master Your Biology with Precision Thermal Tracking.

Body: Stop guessing your recovery. Sauna Flow transforms your sauna and cold plunge sessions into actionable health data. Designed for biohackers, athletes, and wellness enthusiasts, we go beyond simple timing.

Why Sauna Flow?

Advanced Zone Analysis: Visualize your physiological strain. As seen in your session analysis, track Metrics like Ramp Rate and Stability Score to ensure you are hitting the target cardiac output without overtraining.

Customizable Protocols: Whether it's a "Detox" session (Zone 2) or "High Intensity" heat endurance (Zone 4), configure your thresholds precisely.

Seamless Apple Watch Integration: Leave your phone in the locker. View real-time heart rate zones and duration directly on your wrist.

Scientific Insight: Understand your "Sauna Load." Monitor how thermal stress impacts your resting heart rate and sleep quality over time.

Key Features:

Real-time Heart Rate Graph & Zone Alerts.

Automated "Contrast Therapy" cycles (Sauna -> Cold -> Rest).

Deep integration with Apple Health (HealthKit).

Dark mode optimized for low-light relaxation environments.