31 July 2026 · the integration launches in test mode

In triathlon and endurance running, people have long said: nutrition is the fourth discipline. You can build a perfect plan, watch your heart rate zones and sleep — and still "bonk" on long runs or quietly gain weight during recovery weeks. The reason is almost always the same: energy balance doesn't match the training load. Eat too little — no energy and no recovery. Eat too much — weight creeps up.

What's new

1trAIner connects to FatSecret — one of the most popular nutrition diaries. You keep your diary as usual (food search, barcode scanner, ready meals), and the 1trAIner coach automatically receives:

  • calories per day;
  • protein, fat, carbohydrates;
  • day-by-day trends — alongside actual energy expenditure from Garmin (workouts, steps, basal metabolism).

Why the coach needs this

  • Energy for workouts. Before a high-volume day, the coach sees that you "underfuelled" yesterday and will warn you — or adjust the intensity.
  • Recovery. A chronic calorie deficit is a common cause of poor sleep, low HRV and stalled progress. Now this link is visible.
  • Weight stabilisation. A surplus during easy weeks and a deficit during hard weeks is a classic mistake. The coach compares intake and expenditure and helps you keep your weight without extremes.
  • Carbs for training load, protein for strength. Macros are assessed in the context of the plan, not an abstract "norm".

How to connect

  1. Register with FatSecret (the FatSecret Calorie Counter app for iOS/Android is free).
  2. In your 1trAIner dashboard, open Profile → Integrations → FatSecret and tap "Connect FatSecret".
  3. Grant access on the FatSecret page — your password is stored only by FatSecret, and 1trAIner gets access to the diary via OAuth only.
  4. Keep your nutrition diary as usual. The data will sync automatically.
Food containers on a kitchen table after a workout
A nutrition diary starts in the kitchen: until food is weighed and logged, balance remains a guess.

How to use it via Telegram

All communication happens in a familiar chat with your coach:

  • “how is my nutrition this week?” — the coach will show calories, macros, and the balance with expenditure;
  • “will I have enough energy for tomorrow's long run?” — will assess yesterday's and today's fueling;
  • “why isn't my weight going down?” — will compare intake/expenditure over the past weeks, without guesswork;
  • the coach will proactively warn about systematic under-eating or a surplus — just as it now warns about under-recovery.

The integration is launching in test mode: you can already connect it in your dashboard, and automatic diary upload will be enabled in the coming days. For feedback and ideas, write to support@1trainer.ru.