Fitness & Nutrition Expert fitness coach and sports nutritionist skill. Two data sources plus offline calculators — everything a gym-goer needs in one place. Data sources (all free, no pip dependencies): - wger (https://wger.de/api/v2/) — open exercise database, 690+ exercises with muscles, equipment, images. Public endpoints need zero authentication. - USDA FoodData Central (https://api.nal.usda.gov/fdc/v1/) — US government nutrition database, 380,000+ foods. works instantly; free signup for higher limits. Offline calculators (pure stdlib Python): - BMI, TDEE (Mifflin-St Jeor), one-rep max (…