Watch readings
Articles on HRV, resting heart rate, sleep, wrist temperature and breathing rate — what each reading means and what it cannot tell you.
Alcohol and HRV in perimenopause: what a drink shows
An evening drink lowers overnight HRV and lifts heart rate in a dose-dependent way. Here is how to keep those nights from blurring your perimenopause record.
signalsSkin temperature vs core temperature: what a wrist reads
Your watch measures skin, not core — and on the nights that matter the two can move in opposite directions. What that gap means for a wrist reading.
signalsApple Watch respiratory rate in perimenopause
Your Apple Watch logs a breathing rate every night. Here is what that number is actually measuring during perimenopause — and the three things it is not.
signalsWrist temperature and cycle tracking in perimenopause
When cycles turn irregular, the post-ovulation temperature shift often stops appearing. What an overnight wrist reading can add, and what it cannot settle.
signalsIs your resting heart rate rising in perimenopause?
Resting heart rate often drifts up through midlife. Here's how to read the shape of that drift against your own baseline — and what your watch can't tell you.
signalsWhat’s a “normal” HRV for a woman over 40? Wrong question
Is there a good HRV for women over 40? The reference tables disagree with each other, and Apple Watch reports SDNN — so your own baseline compares better.
Your watch records the night. Read it back.
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