Hevy-SL is a streamlit app designed to analyze your Hevy workout export. It transforms raw CSV logs into an actionable strength and hypertrophy dashboard. Built for lifters who want data-driven progress tracking.
How It Works: The Math Behind the Metrics
Hevy-SL processes your workout CSV using scientifically validated performance metrics:
1. Strength Modeling
Uses the Epley Formula to estimate one-rep maxes (1RM): \(1RM = weight \times (1 + \frac{reps}{30})\) This normalizes different rep ranges to compare strength across sets.
2. Hypertrophy Stimulus
Calculates Training Volume: \(Volume = weight \times reps\) Aggregates volume by muscle group (Chest, Back, Legs, etc.) to track growth potential.
3. Progress Smoothing
Applies Exponentially Weighted Moving Average (EWMA) to raw E1RM data: \(\text{Smooth}(x)_t = \alpha \cdot x_t + (1-\alpha) \cdot \text{Smooth}(x)_{t-1}\) Filters out outliers to reveal true strength trends.
Key Analytic Features
- 📊 Workout Dashboard: Weekly volume heatmaps, muscle distribution charts, and set efficiency metrics.
- 🏅 Hall of Records: Tracks personal bests across all exercises with PR timelines.
- 🔍 Data View: Advanced filtering by workout, set type, or muscle group with export capability.
Built For Strength Scientists
The engine handles messy CSV exports by normalizing date formats, handling missing data, and applying rigorous data validation. Every statistic is calculated on a per-workout basis to preserve context.