Key Takeaways
- AndroAge™ is a single score that benchmarks your night-time erection activity against healthy averages, so you can track your trend over time.
- During REM sleep, the body releases its daytime brake on erections and runs automatic maintenance cycles, typically 3 to 5 times a night in healthy men.
- Total erection time drives the score. In young men it can be roughly 30–40% of sleep time; by around 70 it is often under 10–20%. Common, but not inevitable.
- Single nights vary for ordinary reasons like short sleep, late alcohol or travel. Treat them as information, not judgement, and follow the trend.
- Sleep is the highest-return lever, then removing common disruptors, then the long-term foundations: hormones and cardio-metabolic health.
AndroAge™ is a single score that benchmarks your night-time erection activity against healthy averages, so you can track your trend over time. Here is what it measures, how it is calculated, and what moves it.
The body's overnight maintenance routine
Think of night-time erections as the body's built-in maintenance routine. Like many of the body's systems, this one tends to stay in good working order when it is regularly active. That is part of what makes the overnight pattern such an interesting thing to understand and track over time.
The problem is that during the day, erections are naturally inhibited unless you are sexually aroused, for obvious social reasons. So nature found an ingenious solution. During REM sleep, that daytime brake is released. This triggers a series of automatic overnight maintenance cycles, typically 3 to 5 times every night in healthy men. You are not trying to perform. Your body is simply running scheduled maintenance.
In young men, this maintenance is often robust. Total erection time (TET) can represent roughly 30–40% of total sleep time. With age it tends to decline, and by around 70 it is common for TET to represent less than about 10–20% of sleep time. But while common, this decline is not inevitable.
What makes this powerful is that night-time erections don't depend on one isolated factor. They show up reliably when several core systems are working in sync overnight: sleep, circulation, nerves, hormones and metabolism. When any one of those drifts, night-time erections can weaken. You can read more about what night-time erections are and why they matter.
The Sensor records it. AndroAge makes it one number.
The Adam Sensor records your overnight activity while you sleep. AndroAge™ translates it into a single benchmark of your nocturnal erectile performance compared with healthy averages across age groups, informed by published research and refined using our own growing database.
See how the Sensor works →How AndroAge is calculated
The main driver behind AndroAge is total erection time (TET): the total time spent in erection episodes overnight. AndroAge compares your TET-based pattern with healthy age-group benchmarks and expresses it as a single score you can follow over time. Broadly, more total erection time maps to a stronger score, and less maps to a lower one.
It is important to remember that these relationships are based on healthy population averages. That means there is natural variation between individuals, and even within the same person from night to night. So if your AndroAge comes in a bit older or younger than your chronological age, that alone is not a reason for concern. AndroAge is a wellness metric built around benchmarks, and individual scores can sit above or below chronological age without indicating any issue.
Why your score varies night to night
There is always natural variation in night-time erection activity, especially in the first few nights of recording. Even when nothing fundamental has changed, the number can move because the night moved. Shorter sleep, more awakenings, a different REM profile, late alcohol, travel, illness, heavy late meals or a tougher training and recovery window can all shift the output. This isn't a bug. It's biology.
Research on nocturnal penile tumescence recording has found that consecutive nightly measurements are needed for an accurate picture, because a single night can misrepresent a man's usual pattern. That is why your trend matters more than any one night.
Zou ZJ et al. "Consecutive nightly measurements are needed for accurate nocturnal penile tumescence recording." 2019.💡 Key Point
Use AndroAge as a feedback tool, not a daily verdict. Establish a baseline, change one thing for 10–14 days, and watch your rolling trend. Single nights are information, not judgement.
How to improve your AndroAge
Improving AndroAge is about helping your body run stronger, more consistent overnight maintenance cycles. The encouraging part is that AndroAge doesn't move in a straight line. When your TET is low, the curve is steep, so small, realistic improvements can create a big change in your score. If your TET is already high, the curve flattens: gains still matter, but the score moves less.
| Lever | Why it matters | Where to start |
|---|---|---|
| Sleep | Night-time erections are most strongly linked to REM sleep | A consistent sleep window, enough time in bed, fewer awakenings |
| Common disruptors | They shorten sleep and change its quality and recovery | Late alcohol, heavy late meals, late-night stress, irregular schedules |
| Physiology | Erections need a supportive testosterone environment and healthy blood vessels | Resistance training, aerobic fitness, less central body fat, adequate protein |
Start with sleep
For most men, the highest return comes from sleep. Because night-time erections are most strongly linked to REM sleep, the fastest way to increase TET is usually to improve sleep duration and continuity. Protect a consistent sleep window, give yourself enough time in bed and reduce fragmentation. Even modest reductions in awakenings can make a measurable difference. Our guide to sleep as the foundation of men's health covers this in depth.
Remove the common disruptors
Late alcohol, heavy late meals, high stress late at night and inconsistent schedules don't just shorten sleep; they often change sleep quality and recovery. If you want easy wins, these are often the first levers that show up in the data.
Build the foundations
Over the longer term, the biggest driver is your underlying physiology: hormones and cardio-metabolic health. Night-time erections depend on a supportive testosterone environment and on blood vessels being able to dilate and deliver flow on demand. When the foundations improve, both tend to improve together, and AndroAge often follows. The basics are unglamorous but powerful: regular resistance training and aerobic fitness, managing central body fat, adequate protein and overall nutrition, and generally looking after your long-term health.
When to See a Doctor
AndroAge is a wellness metric, not a diagnosis. If your night-time or morning erections have become rare or consistently weaker for several months, or you also have high blood pressure, high blood sugar or high cholesterol, speak to your doctor. A lasting change is worth a conversation rather than waiting to see if it passes.
If your baseline is low, you are in the sweet spot: you don't need a miracle. Small, consistent gains can translate into a meaningful shift in AndroAge.
Start measuring your AndroAge
Wear the Adam Sensor for three nights to set your AndroAge baseline, then follow your trend as you change one thing at a time. Sleep consistency is the best place to start.
Explore the Adam Sensor →Frequently Asked Questions
What is AndroAge?
AndroAge™ is a wellness score that benchmarks your night-time erection activity, recorded by the Adam Sensor, against healthy averages across age groups. It turns your overnight pattern into one number you can follow over time.
How is AndroAge calculated?
The main driver is total erection time, the total time spent in erection episodes overnight. Your pattern is compared with healthy age-group benchmarks informed by published research and refined using our own database. More total erection time maps to a stronger score.
Why does my AndroAge change from night to night?
Night-time erections vary naturally, especially in the first few nights of recording. Shorter sleep, more awakenings, late alcohol, travel, illness, heavy late meals or hard training can all shift a single night, which is why your rolling trend matters more than any one score.
My AndroAge is older than my real age. Should I worry?
Not on its own. AndroAge is based on population averages, and individual scores can sit above or below chronological age without indicating any issue. Look at your trend over weeks, and speak to your doctor if your erections have changed for several months.
How can I improve my AndroAge?
Start with sleep: a consistent sleep window and fewer awakenings. Then cut late alcohol, heavy late meals and late-night stress. Over the longer term, resistance training, aerobic fitness, less central body fat and good nutrition support the hormones and blood vessels that night-time erections depend on.
Sources
- Physiology, REM Sleep. StatPearls, NCBI Bookshelf.
- Schmidt MH. Sleep-related erections: neural mechanisms and clinical significance. Curr Neurol Neurosci Rep. 2004.
- Zou ZJ et al. Consecutive nightly measurements are needed for accurate nocturnal penile tumescence recording. 2019.
AndroAge™ is a proprietary wellness score expressed in years; it is not a medical or biological age. The Adam Health products and services are not medical devices, and are not intended to mitigate, prevent, treat, cure or diagnose any disease or condition. If you have any concerns about your health, please consult your doctor.
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