What it actually is
Ehlers-Danlos and related hypermobility conditions affect connective tissue, leaving joints lax and prone to pain and injury. They frequently overlap with POTS — postural orthostatic tachycardia syndrome — where standing up triggers a steep rise in heart rate, dizziness, and the sense that gravity has turned against you.
These conditions are common in women and routinely missed for years, dismissed as anxiety or clumsiness. The defining POTS sign, though, is refreshingly concrete: a measurable jump in heart rate within minutes of standing.
What's happening in your body
In POTS, the autonomic nervous system doesn’t tighten blood vessels properly when you stand, so blood pools and your heart rate spikes to compensate — often by 30 beats a minute or more. Lying or sitting, your pulse may look normal; the story is in the transition.
Hydration, heat, sleep and cycle phase all move the size of that jump. For many women, the premenstrual days make orthostatic symptoms worse — which is why seeing the jumps alongside your cycle is so useful.
POTS lives in the stand-up transition: a sharp heart-rate jump the moment you’re upright. Belle surfaces those orthostatic jumps from everyday wear — a first look at the pattern without a tilt table.
How Belle Ring works for it
Belle Ring tracks your heart rate continuously, so the rises that happen when you stand show up as repeated step-jumps through the day rather than a single clinic reading. Over time Belle learns the typical size of your jump and how steady your resting pulse is.
Against your cycle, the view gets richer: Belle can show when your orthostatic jumps grow in the late-luteal phase, helping you and your clinician connect symptoms to a pattern instead of a one-off bad day.
See your own pattern, day by day.
Pre-order the ring →How it comes together
A single big jump might just be a hot afternoon. Tracked against your baseline, your hydration and sleep, and your cycle phase, a consistent pattern of large orthostatic jumps becomes a meaningful read. Belle learns what’s typical for you — so the picture is personal, not a population norm.
- 01Measure
- 02Overlay on cycle
- 03Flag the jumps
How it helps
- Orthostatic jumps, surfaced — Belle shows the stand-up heart-rate spikes from normal wear, so you can see the POTS pattern without a tilt table.
- A number to bring to clinic — a dated record of how big and frequent your jumps are, so your appointment starts from evidence.
- Cycle-aware context — it shows when premenstrual days enlarge the jumps, so you can plan hydration and rest around them.
What to do with it
Use the pattern to get ahead of it: increase fluids and salt if your clinician advises, rise slowly, and brace for harder days in your luteal window. Belle isn’t a diagnosis for POTS or EDS — but the orthostatic record it builds can make the case for proper assessment and help tailor what already works.
