- The AI uses 7-day rolling weight averages from Withings to filter out water fluctuations. Daily weight can swing 1-2 kg without meaning anything.
- Lean mass vs. fat mass is tracked separately. If you're losing weight but also losing muscle, the AI flags it immediately and adjusts your training.
- Research shows that excessive cardio in a caloric deficit increases cortisol, which can actually stall fat loss (Hackney, 2006). The AI balances intensity with recovery to prevent this.
- HRV drops when you're under-recovered or in too steep a deficit. The AI monitors this to keep your deficit sustainable.
AI Coach for Weight Loss
Lose fat without losing muscle. Your AI coach tracks your training, body composition, sleep, and recovery to keep you in a sustainable deficit that actually works long-term.
What you get
Body composition tracking
Withings tracks your lean mass and fat mass separately. The AI monitors both over time so you can see whether you're losing fat, muscle, or both. Scale weight alone is misleading - body composition is what matters.
Caloric burn analysis
Workout data from Strava and Hevy plus daily strain from WHOOP or Apple Health give the AI a picture of your energy expenditure. It uses this to guide sustainable deficit targets rather than extreme cuts.
Fatigue-aware programming
When your HRV drops or sleep quality declines, the AI dials back workout intensity. Training hard on poor recovery during a caloric deficit is a recipe for muscle loss and cortisol spikes.
Progress trend reports
Weekly summaries show weight trends, body fat changes, training volume, and recovery scores. You see the full picture beyond day-to-day fluctuations that don't mean anything.
Questions
How does AI help with weight loss?+
It combines exercise data, body composition tracking, sleep quality, and recovery metrics to create a training plan that keeps you in a sustainable deficit. It adjusts intensity based on your energy levels and flags when overtraining could stall fat loss by elevating cortisol.
How long until I see results?+
Most users see measurable progress within 2-4 weeks once the AI has calibrated your plan. It uses 7-day rolling averages for weight to filter out water fluctuations and show real fat loss trends.
Will it help me keep muscle while losing fat?+
Yes. Preserving lean mass is a priority. The AI monitors body composition via Withings and adjusts training to include enough resistance work. If lean mass starts declining, it modifies your plan to add more strength training and flags potential nutritional gaps.
Can I combine weight loss training with running?+
Yes. The AI structures a hybrid plan using running for cardiovascular fitness and caloric expenditure alongside strength sessions to preserve muscle. It manages total load so neither suffers.
What data does it track?+
Workout calories from Strava and Hevy, body weight and composition from Withings, sleep duration and quality from Oura or WHOOP, and daily activity levels. Together these give a complete energy balance picture.
A coach that texts you first.
After every workout and night of sleep, it messages you with the analysis - and what to change. Free for 7 days.
Used by runners, cyclists, and triathletes worldwide