RunFormCoach goes beyond basic pace and heart rate metrics. It is an all-in-one physiological and biomechanical running coach designed to analyze how efficiently your body utilizes energy in real-time. Understand your limits, prevent injuries, and unlock your peak performance with data-driven coaching. [Core Feature 1: Real-Time Efficiency (EI) & Economy Score (RES)] • EI (m/bpm) quantifies the distance you cover per single heartbeat, while RES (%) scores your real-time running economy against expected efficiency for your current pace. • The algorithm dynamically adjusts for hill grades (Minetti GAP) and wind speed, providing a highly objective measure of your running economy regardless of environmental conditions. [Core Feature 2: Smart Aerobic Decoupling V2.0] • Detect cardiovascular drift during long runs and marathon training. • Auto Smart Stabilization (EMA): Automatically detects when your heart rate and pace reach a true steady-state on flat terrain (±1.5% grade), filtering out brief GPS noise and auto-retrying if you stop at traffic lights. • Once your personalized Baseline is locked, a stepped Decoupling Alert is triggered if your efficiency drops by 5% or more due to fatigue or dehydration (Vibration alerts can be toggled ON/OFF in settings). [Core Feature 3: Scientific Smart Energy Gel Alert] • Never hit "the wall" (bonking) again. Since energy gels take 15–20 minutes to absorb into your bloodstream, waiting until you feel exhausted is too late. • Triple-Trigger Algorithm: Tracks your real-time carbohydrate (glycogen) burn rate across HR zones and combines it with early decoupling detection (-3.0% drop). • Alerts you at the exact physiological moment your body needs fuel ("EAT GEL #1, #2...") while enforcing a 25-minute cooldown to prevent stomach (GI) distress. [Additional Features] • Target Step (TS) Coaching & Step Match Rate: Calculates your ideal biomechanical step length based on your height, pace, and slope. Vibration alerts guide your cadence/step in real-time. (Tip: A Step Match Rate above 90% in your post-run summary indicates excellent form consistency!) • Fractional Zone 2 Tracker: Displays your precise decimal HR zone (e.g., 2.5 for mid-Zone 2, 2.8 for approaching Zone 3) with color-synced gauges, effective Z2 time, and customizable Z3 penalty timers. • Multi-Layout & Auto-Scroll Display: Supports 1-Line, 2-Line, and Full Screen (Ultimate) layouts with AMOLED burn-in protection. Cycles through Cadence, Timer, Distance, Avg Pace, Time, and Fat Burned (g) every 4 seconds. [Quick Setup & Customization Tips] • To enable Aerobic Decoupling (AE): Open Settings, find "[Efficiency] Aerobic Decoupling Baseline", and select "Auto (Smart Stabilization)" or a fixed time window. • For runners with high HR variability (or POTS): You can lower "[Zone2] Z3 Penalty Ratio" to 1x, increase "Hill HR Margin", or switch the Main Coaching Mode to "Step (TS) Coach" for pure biomechanical feedback without HR penalties.

[Major Update: Smart Energy Gel Alert, Auto Baseline V2.0 & UI/Web Improvements] Based on valuable feedback from runners worldwide, RunFormCoach has evolved into a complete biomechanical, cardiovascular, and nutrition coaching system! • NEW - Scientific Smart Energy Gel Alert: o Never hit "the wall" (bonking) again! Since energy gels take 15–20 minutes to absorb, waiting until you feel exhausted is too late. o Triple-Trigger Algorithm: Combines real-time carbohydrate (glycogen) burn tracking across HR zones with early aerobic decoupling detection (-3.0% drop) to alert you at the exact physiological moment you need fuel ("EAT GEL #1, #2..."). o Includes a 25-minute safety cooldown guardrail to prevent stomach (GI) distress, and can be toggled ON/OFF in settings. • UPGRADED - Smart Aerobic Decoupling V2.0 (Auto EMA): o Self-Healing Auto-Retry: In Auto mode, stopping at traffic lights or water stations no longer causes a permanent "BASELINE FAILED". The app automatically resets and searches for the next steady-state window. o Leaky Bucket & Hill Guardrail: Ignores 1-second GPS spikes under trees/bridges and pauses baseline collection on hills (beyond ±1.5% grade) to prevent heart rate lag distortion. o Faster Lock-In: Incorporates your verified 1-minute steady-state data immediately, reducing additional baseline measurement time from 5 minutes to 3 minutes. o Added an independent ON/OFF toggle for Decoupling vibration alerts. • NEW - Fractional Zone 2 Gauge: o Displays your exact decimal HR Zone position (e.g., 2.5 for mid-Zone 2, 2.8–2.9 for approaching Zone 3 warning, 3.1 for Zone 3) with color-synced circular indicators. • UI/UX & Bug Fixes: o Fixed Garmin Connect Web summary formatting: Optimized FIT data types to clean integers so metrics no longer show long trailing decimals on web browsers. o Terminology Fix: Updated English labels from "Stride" to "Step" (e.g., Step Match Rate) to accurately reflect single-step biomechanical measurements. o Adjusted Zone 2 gauge vertical spacing for better readability on small-screen watches and organized settings into clean categories.