The Coach Blog
Training science, AI coaching insights, and practical guides to help you train smarter.
Training After Injury: Endurance Athlete Playbook
How to keep your fitness, load injured tissue safely, and return to running after a musculoskeletal injury. Evidence-based rehab for endurance athletes.
Apple Health Sync: AI Coaching From Apple Watch
Coach now syncs with Apple Health: workouts, heart rate, HRV, and sleep from your Apple Watch feed your AI coaching, with up to a year of history backfilled.
Heat Acclimation Training for Endurance Athletes
How heat hurts endurance performance, why heat acclimation is the most underrated training tool, and the protocols, cooling tactics, and safety rules.
Carbohydrate Fueling for Endurance: 2026 Playbook
Evidence-based carbohydrate fueling for endurance: carbs per hour, glucose-fructose ratios, gut training, race-day protocols, and recovery.
Overtraining Syndrome: Symptoms & How to Avoid It
The overtraining continuum from functional overreaching to full burnout: warning signs, biomarkers, and evidence-based prevention strategies.
Ironman & Triathlon Training With an AI Coach
How AI coaching handles Ironman and triathlon training: balancing swim, bike, and run volume, managing combined load, and adapting when life disrupts the plan.
Coach vs ChatGPT for Fitness: AI Coach vs Chatbot
Compare using ChatGPT for workout plans vs a purpose-built AI fitness coach. Data integration, training memory, and periodization compared honestly.
Coach vs Garmin Coach: Who Uses Your Data Better?
Compare Garmin Coach and Coach for training guidance. See how a free built-in coach stacks up against a conversational AI with deep data integration.
Coach vs Runna 2026: AI Running Coaches Compared
Detailed comparison of Coach and Runna for AI-powered running coaching. Features, pricing, flexibility, and data integration compared side by side.
TRIMP Explained: Meaning, Formula & Calculation
What TRIMP (training impulse) means, how the Banister and Edwards formulas calculate it, how it compares to TSS and CTL, and how to read training load.
Athlete Recovery Tracking: Sleep, HRV & Rest Days
Learn how athlete recovery tracking with HRV, sleep quality, and readiness metrics can optimize your training. Make rest days data-driven, not guesswork.
Nutrition for Endurance Athletes: A Fueling Guide
A complete nutrition guide for runners and endurance athletes covering macros, pre/during/post-workout fueling, hydration, and supplements.
Training Periodization for Runners: Build to Race
Learn how training periodization structures your running into base, build, peak, taper, and recovery phases for optimal race-day performance.
Garmin AI Coach: How Watch Data Shapes Training
How connecting your Garmin watch to an AI coach turns HRV, sleep, and training load data into specific decisions about what to train tomorrow.
Heart Rate Zone Training: All 5 Zones Explained
Master heart rate zone training with this guide to all 5 HR zones, zone 2 endurance benefits, calculating zones, and using data to train smarter.
AI Coach vs Personal Trainer: An Honest Verdict
AI coaching versus a human coach or personal trainer, judged on the research: where LLMs win, where they fail, what each costs, and how to stay safe.
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