Fuel Tank
A live glycogen estimate for your current day. Use it to understand your readiness for high-intensity work and avoid under-fueling before key sessions.
What you get: current level, trend, and next action.
Train by watts. Fuel by physiology.
The AI Endurance Coach that adapts training, recovery, and fueling every day. We turn your workouts and nutrition logs into clear performance decisions.
Stop counting calories. Start fueling for the work ahead.
Coach Watts combines your training load, meal logs, and planned sessions to estimate fuel availability and tell you what to eat, when to eat, and why it matters for performance.
A live glycogen estimate for your current day. Use it to understand your readiness for high-intensity work and avoid under-fueling before key sessions.
What you get: current level, trend, and next action.
A rolling projection across upcoming days. It highlights when your plan may accumulate fatigue so you can correct fueling before performance drops.
What you get: trendline, risk windows, and confidence cues.
Pre, intra, and post-workout targets for carbs, hydration, and sodium based on your planned training and current state.
What you get: practical targets you can execute without guesswork.
Live Fuel Demo
Example timeline: same workout, different fueling strategies.
Projected Session Outcome
Based on the selected fueling strategy.
Start Workout At
58%
End Workout At
41%
Expected Session Quality
Stable execution
A pre-session carb hit lifts your starting fuel and helps sustain quality through the main set.
Fuel estimates are model-based and improve with consistent logs and completed sessions. They are not direct lab measurements.
From Raw Data to Gold Medal Strategy
We don't just show you charts. We ingest your entire digital physiology, analyze the hidden patterns, and build a coaching strategy that includes training and fueling.
We sync seamlessly with the tools you already use. Stop jumping between apps and start seeing the full picture of your performance.

The Brain Behind the Performance
We don't just count steps. Coach Watts uses a multi-layered AI pipeline to construct a "Digital Twin" of your physiology.
Most platforms analyze a workout in isolation. Coach Watts analyzes it in the context of your entire history, your nutrition, and your recovery.
Fitness: 8.5/10
Fatigue: High
Trend: Peaking
Why our athletes consistently outperform their past selves.
Set Goals. Crush Them. Don't Just Train. Train with Purpose.
Whether it's a podium finish, a power target, or weight loss, Coach Watts keeps you on track with personalized adaptive coaching.
"Gran Fondo New York"
Peak for race day with periodized blocks.
"Increase FTP to 300W"
Structured intervals to boost threshold.
"Reach 70kg Race Weight"
Fuel targets adapt to training load, not just calories.
"Ride 5 days/week"
Build habits that stick.
Plans for Every Athlete
From casual tracking to professional AI coaching. Start free and upgrade as you grow.
All plans include a 14-day money-back guarantee. No credit card required for the free plan.
Join endurance athletes using Coach Watts to train smarter and fuel with confidence every day.