Morning wood is the readout — a normal sign of healthy sleep, blood flow and hormones. Log it in 10 seconds a day and learn what actually moves yours: sleep, alcohol, stress, and more.
The check-in you'll actually keep doing — and the honest, n-gated stats it earns you.


EXAMPLE DATA · ILLUSTRATIVE
Nocturnal erections aren't about arousal — they're physiology on a schedule.
Roughly 80% of nightly erections happen during REM sleep. Anything that cuts your REM — short nights, alcohol, bad sleep — cuts your mornings first.
Morning erections ride the daily testosterone high. Frequency tracks hormonal health — which is why the check-in is a morning ritual, not an evening one.
Erections are vascular events. Doctors have used nocturnal erection tests for decades to tell physical from psychological causes — your mornings carry real information.
Rate it none → full, then tap through last night: sleep, alcohol, stress, exercise, how you woke. Ten seconds, one thumb.
One entry a day, editable until midnight. The strip fills in; your 7-day frequency and average level appear from day one.
Once a factor has 5 mornings on each side, its impact unlocks — your average on alcohol nights vs none, solid sleep vs rough, and more. Your data only, honest sample sizes, no fake significance.
Your log is private to your account — never shared, never sold, never used for ads. It exists to power your own insights inside your cabinet, and nothing else. The free account is what keeps your streak and history yours.
This is tracking, not diagnosis. Impacts only appear with 5 mornings on each side — never from two data points. And if your mornings disappear consistently for weeks, we'll say the honest thing: mention it to a doctor.
Free · private · 10 seconds. Streak starts tomorrow.
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Want the full picture? RateMyDick's AI analysis measures 29 metrics from a single photo — the tracker works great without it.