How it Works

The plan says what. Readiness says how hard. Ravns builds your training around the one weakness holding your goal back, then reads your body’s overnight data every morning to decide how hard today should be. A flock of specialist AI agents runs it all behind one coach. This page walks through the machinery, top to bottom.

The whole system · One pass

Ravns at a high level

You pick a goal. The one decision you make.
Ravns finds your limiters. The biggest weaknesses holding that goal back, read from your real data.
The plan trains those weaknesses. Built around your real gyms and days; what's left off is deliberate.
Each morning, you are told what you have got. Overnight data becomes one call: train hard, steady work, or recover.
Food targets follow the work. More fuel on hard days, protein held constant always.
Every day

How Ravns works on a daily basis

Restin · Readiness
Readiness: Should you train?
1
Restin reads the night. Heart rate variability, resting heart rate, sleep, breathing rate, and recent training load — all pulled from your watch while you slept. Nothing to log.
2
It gives a call, not a score. Train hard, steady work, or recover: something you can act on before coffee, instead of a number you'd have to interpret.
3
The call is advice, not an override. Your session stays as written; what changes is how you run it. Ravns does not quietly rewrite your week behind your back. On the days you are genuinely dug in it asks — one tap swaps the session for rest, and it is your tap.
Primed
Recovered. Attack the limiter; this is the day it moves.
Balanced
Partly recovered. Do the session, but hold the intensity down yourself: progress without the cost.
Strained
Run down. Keep it easy, and come back to the limiter stronger tomorrow.
Why yesterday's work counts tooThe call is Restin's, not your watch's. The morning after a max effort your heart numbers can look fine — heart rate and variability bounce back overnight — while muscles, tendons and joints are still days behind, and no watch sees them. So what you actually did is one of the signals in its own right, and a near-maximum session in the last 48 hours drags it down. It is one signal among five, though, not a veto. The thing that can overrule a good-looking morning outright is your own heart-rate variability collapsing against your baseline: that caps the score however well everything else reads.

You hit the hard days genuinely fresh, and never dig a hole on the easy ones.

Trainin · The limiter
The limiter: What you should train.
1
You get one session. Today's piece of the limiter's work: no deciding at 6am, no wondering what matters.
2
You do it. The session that moves the goal: not everything, not busywork. Show up, do the piece.
3
Limitin checks what happened. Finished workouts flow in from your watch automatically. Skip a session and the plan reroutes around the gap: no guilt, no pretending it didn't happen.
It bends, it doesn't driftA rough week reshuffles the work, but the plan keeps aiming at the same limiter, so a busy month doesn't quietly turn your plan into a different, easier one.

You show up to one clear job a day: the one that moves the goal.

Also daily · Foodin fuels the work
Foodin · Fuel

Food targets follow the training.

Most apps give you one fixed calorie target. Ravns doesn't, because your days aren't fixed: Foodin raises energy and carbs on hard training days and eases off on light ones, while protein stays constant; that's the floor your muscles rebuild from, whatever the day.

Hard daymost fuel
Easy dayless
Rest daybaseline
Protein floor: held constant whatever the day; carbs flex above it.
Matched to the goal A runner fuels the training; an athlete on a GLP‑1 holds maintenance, never a deficit stacked on top of the drug. Into a race, carbs load as the taper cuts volume.
The team · Who does what

The Architecture: One coach, a flock behind it

Each raven goes deep on one job: some are AI consultants Hugin calls on, others are deterministic engines running on your phone. They propose, Hugin decides, and you only ever hear one voice.