Train or rest How the call is made

Waiting for your nights

…

Your normal range 7-night average Each night

Why

    Use your own nights

    In the Garmin Connect app, open HRV Status and read off your overnight numbers. Type them below, oldest first, last night at the end. Two weeks gives a good call; eight nights is the minimum.

    Or drop a file here: a Garmin Connect HRV export, a GarminDB or spreadsheet CSV with a date and an HRV column. A resting heart rate column is used too.

    Everything is worked out in this browser tab. Your numbers are not uploaded anywhere.

    Your full recovery report FULL

    Patterns across all your nights: how often you were ready to train, your longest run of under-recovered days, which weekday hits you hardest, and whether your HRV is trending up or down. Print it or download every daily call as a spreadsheet.

    Free try: the sample plus 2 calls on your own nights. Full report and unlimited calls: £4.00, once. No account, no subscription.

    Unlock the full Train or rest

    How the call is made

    Garmin's overnight HRV is compared with your own last 60 nights, not with other people. Values are log-scaled first, the standard way sports scientists handle HRV.

    One low night only counts when it drops further than your normal night-to-night wobble. A low 7-night average means fatigue is building over days. A resting heart rate 5 bpm above usual adds weight.

    Train when nothing is off. Go easy when one signal is off. Rest when a low night lines up with a low week or a raised pulse.

    This is a training guide, not medical advice. If you feel unwell, rest whatever the numbers say.

    FAQ

    What does it do?

    You give it your overnight HRV numbers from a Garmin watch. It compares them with your own recent nights and tells you whether to train, go easy or rest today.

    Is my data uploaded?

    No. Your numbers and any file you open are worked out in this browser tab and are not sent anywhere. The last numbers you typed are kept in this browser only, so they are there next time. The only thing counted is an anonymous page-view and free-use count, and payment goes through Stripe.

    What does it cost?

    Free: the sample plus 2 calls on your own nights. The full recovery report and unlimited calls are £4.00, paid once. No account, no subscription.

    Can I get a refund?

    Digital goods: access starts straight away, so the 14-day cancellation right ends once you start using it. If something is broken, email business@thatched.ai.

    Which browsers and devices work?

    Any recent browser on a phone or computer. Nothing to install. You need your overnight HRV numbers, for example from the Garmin Connect app.