Metabolic
Overnight glucose stability, dawn phenomenon, the smoothness of the night. If you wear a CGM, this layer carries strong signal.
Readiness · An Oura alternative
Know what today can hold.
A morning recovery check that reads your overnight glucose — not just your HRV. For a body that doesn't follow a training cycle.
Get Body Insights
iPhone + Apple Watch. Free for core features.
The score said recovered. You stood up and the floor felt uncertain.
Most recovery scores read three things: your overnight HRV, your resting heart rate, your sleep. For a 28-year-old marathon runner, that's usually enough. For a body managing chronic Lyme, an autoimmune cycle, perimenopause, or post-viral fatigue, it's roughly half the picture — and the half it's missing is often the half that decides how the day goes.
You've felt it. The ring said you were ready. By 2pm you're paying for a morning you barely had. The number was honest about what it measured. It just wasn't measuring enough.
Body Insights adds the layer most readiness apps don't read — your overnight glucose — and tunes the rest of the check for a body whose baseline varies.
The part nobody else reads: your overnight glucose.
If you wear a CGM — Stelo, Dexcom, Libre — Body Insights folds your overnight glucose stability into the morning check. When your blood sugar swings hard at 3am, a dawn rise, a late-night drop, a reactive spike from yesterday's dinner, your autonomic nervous system spent hours managing it. You didn't see any of that. Your HRV looks fine. The score that ignores glucose says you're fresh.
We don't ignore it. If overnight glucose was unstable, the recommendation reflects it — even when everything else looks good.
If you don't wear a CGM, the metabolic component drops out cleanly and the other three rebalance. The check still works.
Four signals, one plain-language read.
The check listens to four channels and answers in a sentence. Each channel can pull the read toward "go" or toward "ease up." The picture below is what the morning looks like when the channels disagree, and the answer comes out cautious.
No score. No ring. Four channels feed one sentence — and on a morning where the channels disagree, the sentence leans toward easing up.
See your own pattern, tomorrow morning
Free for core features. No card needed.
For people who want the science.
Everything below is what an honest Oura alternative should tell you. If you're shopping comparisons or want to understand what the check actually does, you're in the right place.
How the check is built.
Four signals, each carrying a different say in the answer. You don't see a raw number unless you go looking — the morning output is one plain-language sentence.
Autonomic
Your HRV against your own 90-day baseline, plus resting heart rate trend. Tuned to your variance, not a population average.
Training load
Acute fatigue measured against chronic fitness — the same balance model elite training uses, recalibrated for variable energy.
Circadian
How aligned today is with your natural phase. A late night against an early call costs you here.
Safety overrides
Elevated resting heart rate, suppressed HRV, the early signals of an illness pattern. On those days the recommendation refuses to push.
Plain-language output
"Today has more in it." Or "Today, take it slow." Or, on the days it matters, "Move what can wait. Keep the week."
Grounded in research, not vibes.
A few of the studies the check is built on. Every component links to a source. Where the research is early, we say so.
HRV as a window onto autonomic and executive function — Thayer & Lane's neurovisceral integration model. This is why HRV reflects more than just heart health.
Overnight glucose variability and sympathetic nervous system activation — a steady line of research from 2023 onward, particularly in non-diabetic populations and perimenopausal women. The literature is younger than the HRV literature, so we treat it with appropriate care.
Acute and chronic training load balance — the Banister Impulse Response model, adapted for non-athletic baselines.
Oura, Whoop, Apple Watch — how this differs.
You're probably here because one of these didn't fit. So this is the honest comparison.
| Oura / Whoop | Apple Watch alone | Body Insights | |
|---|---|---|---|
| Reads HRV | Yes | Yes | Yes |
| Reads sleep stages | Yes | Yes | Yes |
| Reads overnight glucose | No | No | Yes |
| Tuned for chronic illness | No | No | Yes |
| Subscription | $6–30 / month | None | Free for core |
| Extra hardware | Ring or strap | None | None |
Oura and Whoop are real products made by careful people. They were built for a different reader — athletes tuning training load, biohackers chasing optimization. If yours is a body whose recovery doesn't follow a training cycle, this one was built for you.
Questions you're probably asking.
Do I need a CGM for this to work?
No. Without a CGM, the metabolic component drops out and the other three rebalance. You still get a useful morning check — it just has less to read from.
How is this different from Oura or Whoop?
Two things. Those apps don't read your glucose. And they tune their formulas for athletic training cycles, not for the variability that comes with chronic illness or hormonal shifts. Also: no ring, no monthly fee.
What if I'm sick?
The check has safety overrides for elevated resting heart rate, suppressed HRV, and the early signals of an illness pattern. On those days it refuses to tell you to push. You can override it; it won't argue.
How accurate is it?
Most useful as a 7-to-14-day trend. A single morning is a snapshot — the pattern is the signal. Calibrated to your own baseline, not a population average.
Does it work with chronic illness?
That's who it was built for. ME/CFS, Long COVID, chronic Lyme, chronic EBV, fibromyalgia, POTS, autoimmune flares, perimenopause, post-illness recovery. The audience came first. The formula followed.
How much does it cost?
Free for core readiness features. A premium tier adds the metabolic-sleep fusion and deeper analytics. No card needed to start.
Your data stays yours.
On-device. No account. No subscription required. No data sold. Ever. Your HRV, your glucose, your sleep, your patterns — none of it leaves the phone unless you explicitly export it.
- Reads from Apple Health
- Stays on your iPhone
- You choose what to share
See your own pattern, tomorrow morning.
Free forever for core features. Premium adds the metabolic-sleep fusion.
