What problem does it solve? Finding reliable exercise instructions, food macro data, and body composition calculations requires juggling multiple websites and manual math. This Skill consolidates workout planning, nutrition lookup, and fitness calculators into one workflow backed by free public APIs and offline Python scripts. ## Core Features & Use Cases - Exercise Database Lookup: Search 690+ exercises from the wger API by name, muscle group, category, or equipment, with full details including instructions and images. - Nutrition Data Retrieval: Query the USDA FoodData Central database of 380,000+ foods for per-100g calories, protein, fat, and carbs, using DEMO_KEY or a free API key. - Offline Body Calculators: Compute BMI, TDEE (Mifflin-St Jeor), one-rep max (Epley/Brzycki/Lombardi), macro splits for cutting or bulking, and body fat percentage (US Navy method) with pure stdlib Python. - Use Case: A user planning a cut asks for their TDEE at 80kg with moderate activity, then gets a 40/30/30 macro split at a 500 kcal deficit, plus a list of dumbbell chest exercises for their training day. ## Quick Start Ask the agent to calculate your TDEE and macro split for fat loss, then search for high-protein foods and exercises targeting a specific muscle group.