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The science

Why night-time erections matter

3–5

erections every night, while you sleep — not sexual, but your body’s built-in maintenance routine.

Your body's natural night gym — nocturnal erections as overnight tissue maintenance
Maintenance

Your body’s natural night gym

Each episode sends oxygen-rich blood into the erectile tissue, keeping it flexible, nourished and healthy — like a nightly workout that protects function for the long term. Just as your daily steps reflect physical activity, the total duration of your night-time erections reflects how well your body is maintaining itself at rest. Longer total duration means better oxygenation, tissue health and recovery.

Adam Sensor measuring night-time erections as a key indicator of male longevity and AndroAge
Biomarker

A key indicator of male longevity & wellness

Night-time erections are more than a measure of performance; they are one of the most powerful functional biomarkers of men’s health. They depend on your cardiovascular system, hormones, nerves and sleep quality. Changes in night-time erections often mirror early shifts in heart, metabolic or hormonal health long before symptoms appear. Through the Adam App this is translated into your AndroAge™ — a single score, expressed in years, that reflects how well your body is functioning across these systems.

What improvement means for you

More oxygen, every night

Stronger night-time erections mean more oxygen and gentle stretch for your erectile tissue during sleep.

Better-conditioned tissue

Better-conditioned tissue supports daytime confidence without relying on short-term solutions.

Broader health gains

Improvements reflect broader health gains, like better sleep and recovery, improved cardiovascular fitness and more balanced hormones.

Your results

Every morning, the full picture

AndroAge™ trend

Lower is better
42 34 26 MayJunJulAugSep Trending down

Your Key Nightly Metrics

Example figures

  • Erection Episodes

    4

    How many erection episodes recorded

  • Erection duration

    140m

    The total duration of all the recorded episodes

  • Erection quality

    87%

    Scored against your own baseline

  • Total duration

    7h 54m

    How long the sensor recorded, so the measurement has context.

Screens and figures are illustrative. AndroAge™ is a wellness tracking tool, not a clinical score or medical assessment.

Curious Where You Stand?

Take our free, 1-minute quiz to discover your estimated AndroAge™.

What's my AndroAge™

How it works?

Track — wear the Adam Sensor overnight to measure nocturnal erections and establish your AndroAge baseline

Track

Wear the Adam Sensor overnight

Lightweight, wireless, and designed for complete comfort, it records your body’s natural night-time erections while you sleep.

After just three nights, the Adam App calculates your AndroAge™ baseline - your first measurable snapshot of erection and vascular health.

Understand — see your AndroAge score and night-time erection trends in the Adam Health app

Understand

See Your Patterns Clearly

Your night-time erection data is translated into a single AndroAge™ score, displayed with intuitive trend lines that reveal how your body responds over time.

Track progress, spot changes, and understand how lifestyle factors influence your results.

Optimize — evidence-based guidance in the Adam Health app to improve erection health and AndroAge

Optimize

Build on what matters most

The Adam App offers structured, evidence-based guidance - from foundational improvements like sleep, recovery, and circulation, to conditional factors such as cardiovascular health and testosterone balance, and finally to targeted techniques that support penile tissue health and recovery.

Learn how to strengthen your function and support long-term performance and longevity.

Getting started

Setup happens once and takes a few minutes. After that it’s putting it on before bed and checking your results in the morning.

  1. 1

    Charge it

    USB-C, with the cable in the box. A full charge takes about an hour and gives you up to 14 hours of recording.

  2. 2

    Open the app

    Free on iOS and Android. The sensor pairs over Bluetooth the moment you open it — there is no setup to work through.

  3. 3

    Put it on before bed

    Its worn at the base of the shaft with a retractable, non-constricting band.

  4. 4

    Sleep as normal

    It records on its own through the night. Nothing to start, stop or check — and next to no cleaning afterwards.

In the morning

Your episodes, total duration and quality are waiting in the app.

After three nights

You have your AndroAge™ baseline. From then on, once a week or every couple of weeks is enough to track your trend.

What do the experts say?

Night-time erections are a little-known yet crucial biomarker of sexual function, as well as cardiovascular, hormonal, and lifestyle health. The Adam Sensor, a revolutionary technology once confined to sleep labs, now puts this insight in any man’s hands.
— Dr Ben DavisMen's Health Doctor and Clinical Sexologist
The Adam sensor represents an important step forward in proactive men’s health. By transforming nocturnal erections into objective, longitudinal data, the platform gives men valuable insight into a key marker of sexual and overall health. I strongly support tools that encourage earlier engagement, meaningful tracking, and greater ownership of long-term health and performance.
— Michael StrømMen’s Health Specialist and International Shockwave Educator
Tracking night-time erections is one of the single best indicators of a man’s overall health and wellbeing.
— Professor Amr RaheemConsultant Andrologist & Professor of Men’s Health
Healthy erections are built while you sleep. The Adam Sensor proves it, showing which habits boost or blunt night time erections and long-term function. Its data drives the research and protocols I share with my men’s-health communities, because data beats marketing.
— Jordan TsanevCitizen Scientist & Men’s-Health Communities Leader

FAQs

What data will the Adam Sensor provide?

The Adam Health app translates raw data from the sensor into clear, actionable insights. After each night of use, you will see:

  • AndroAge™: A single score that benchmarks your night-time erection activity against healthy averages.
  • Erection Episodes: The number of times an erection occurred during the night and the time and duration of each event.
  • Total Duration: The total amount of time spent in an erection state.
  • Erection Quality: A percentage score based on your personal baseline.
  • Measurement Duration: The total duration of the measurement, which helps put your erection data into context.

The app tracks these individual measurements over time to show you long-term trends in your wellbeing.

What is AndroAge™?

AndroAge™ is a personalised wellness metric based on your recorded nighttime erection data, including total duration and episode frequency. It compares your measurements to average patterns observed across age groups, giving you a personal benchmark to track how your results change over time.

AndroAge™ is not a clinical score, or a medical assessment. It is a wellness tracking tool designed to help you understand your own patterns and see how lifestyle factors may correlate with your results.

The result is personalised to you.

Will the Adam Sensor fit me?

The Adam sensor uses an adjustable design to fit all sizes comfortably.

It is small enough to not disrupt your sleep, while the pull-out section adapts to your body.

If the sensor does not fit, we provide a full refund.

How does the sensor feel while I sleep?

The Adam sensor is designed to be non-constrictive.

Unlike devices that use tight elastic or rigid bands, our sensor uses a flexible, adjustable pull-out section. It sits securely without applying pressure or restricting natural movement.

This ensures the sensor stays in place throughout the night while remaining comfortable.

How is the Adam Sensor different from a typical penis ring?

The primary difference is safety and intent. Most consumer rings, even those marketed as trackers, are constriction devices.

To avoid the risk of tissue damage, safety guidelines generally recommend these should not be worn for more than 30 minutes. The Adam Sensor is specifically designed for sleep and safe night time erection tracking.

It is non-constrictive and uses a flexible, adjustable band. This allows for safe, continuous use throughout the night without restricting blood flow or natural movement.

How often should I wear the Sensor?

You don’t need to wear the sensor every night to get value from it.

We recommend wearing it for three nights when you first start, either consecutive or close together. This establishes your initial benchmark. After that, while some men prefer to wear it nightly, wearing it once a week or every two weeks is enough to track your trends and spot any changes.

Like any wellness tool, more data makes it easier to see patterns, but the frequency is entirely up to you.

Is there a monthly subscription?

Currently, there is no monthly subscription. Your purchase of the Adam sensor includes full access to the app and your personal insights.

As we develop more advanced features and long-term data tracking, we may introduce a premium subscription tier in the future. However, we will always be transparent about any changes to our pricing.

Is the Adam Sensor rechargable or battery powered?

It is fully rechargeable (USB-C) and is supplied with a relevant cable that plugs into a standard USB port.

How is my data used?

Your data is used to provide you with personalized wellness insights. The Adam app analyzes your sensor readings to calculate your AndroAge™ and track trends in your erection duration, frequency and quality.

We prioritize your privacy. Your data is encrypted and used only to improve your experience within the app. We do not sell your personal health information to third parties, insurance companies, or advertisers.

Is the Adam Sensor a medical device?

No, the Adam Sensor is a general health tracking device, not a medical device. It is not intended to diagnose, treat, track or cure any medical condition. If you have any concerns we recommended you consult a healthcare professional

Customers praised the tracker for being comfortable, discreet, and easy to use with consistent, reliable data. The app syncs well and provides clear reports, though some wanted more detail and better battery life. Setup takes minutes and the AndroAge score motivates healthier habits. Support is responsive and knowledgeable.

  • 5 stars: 48 (75%)
  • 4 stars: 11 (17%)
  • 3 stars: 2 (3%)
  • 2 stars: 1 (2%)
  • 1 star: 2 (3%)
V
Verified Anonymous Review
Simple and useful overnight tracker

Easy to use and quite interesting. It was comfortable enough to wear overnight and gave me a useful picture of what was happening during sleep. The tracking was straightforward and the app was easy to understand.

a
alex
Really impressed with the Adam Sensor

Really impressed with the Adam Sensor. It’s comfortable to wear overnight, simple to use, and the app makes the results very easy to understand. Being able to actually track my night-time erections and see the data over time gives me insights I simply wouldn’t have otherwise. It’s discreet, well designed, and has become genuinely useful for understanding and monitoring this part of my health. Very happy with it.

V
Verified Anonymous Review
Eye-opening data for men's health

We don't realise how much this kind of data reflects our overall health. It's really helpful to see where you stand compared with your age group, and tracking real progress over time gives you a clear path to improving yourself.

D
Dr E.
I am urologist and have used the sensor myself

I am urologist and have used the sensor myself but also recommend it to my patients. I it’s comfortable, the app works and the insights easy to understand. Looking forward to seeing all the exciting updates in the app that the Adam Health team is planning.

Hi Dr. Evan, thank you so much for sharing your experience and recommendation and ongoing support for the Adam Sensor.

C
CK
The Adam sensor has really helped me understand

The Adam sensor has really helped me understand my erections. Easy to use and comfortable. I now use it almost every day. Would definitely recommend 👍

V
Verified Anonymous Review
Disappointing Experience for the Price

The product is very expensive for what it offers, and unfortunately the app keeps freezing, which makes it difficult to use the product smoothly and reliably. For something at this price point, I expected a much better and more polished experience. Overall, I find it overpriced and disappointing, and I would not recommend it.

Thank you for your review, and we're sorry to hear this. The app freezing shouldn't be happening, and we understand how frustrating that is.

Our team will investigate what's going on, and a member of our team will reach out to you directly to understand the app issues you're experiencing and how we can improve your experience.

O
Oliver O.
Nightly androage number varies from 35-75 even with similar sleep times/duration

Nightly androage number varies from 35-75 even with similar sleep times/duration. It’s actually really hard to make any sense of the data when it’s so variable each day. As of right now, I wouldn’t recommend this device - its not clear how you are supposed to diagnose anything with the variance in daily results.

Thank you for your message, and for the honest feedback.

Night-to-night variation in the session score is expected, even with similar sleep times. A number of things affect it: sleep architecture and quality, alcohol, some medications, exercise the previous day and how well you've recovered. That's why we recommend looking at the trend over weeks rather than any single night.

To make this clearer, we've moved the AndroAge score into Insights, where it now reflects a slower-moving average, while each individual measurement is shown as a session score. We'll also soon be releasing integration with wearable devices, so you can see more of the factors that may be affecting a given night.

If you'd like, we'd be happy to go through your measurements with you. Please contact us at support@talktoadam.com.

J
JK
Better than the old way of doing things

The battery life does not seem like it is going to last long. Within a few weeks of use, it has already dropped from 100% full charge to low 90's after charging. Unlike an Oura ring, the Bluetooth uploading of data feels slow and you don't get an immediate summary report, it sometimes takes hours to see your data from the previous night. But compared to wrapping paper around your penis to see if it breaks, this technology is so far advanced from those days. So far the AndroAge calculation seems gimmicky. Having just the number and quality of erections is the data I want and this little device delivers, so far.

Thanks for the thoughtful review. We’re glad the Adam Sensor is giving you the core data you were looking for.

We’ll be releasing a lot of updates, including faster data transfer and quicker analysis, so your feedback on Bluetooth syncing and report timing is especially helpful. Regarding AndroAge, we use it to translate the underlying data into a metric that is easier for most users to understand, but we appreciate your perspective on how it feels in practice.

We’d love to hear more from you in detail if you’re available for a short call. For any further feedback or features you’d like us to release, please don’t hesitate to contact our support team at support@talktoadam.com.

H
Hugo L.
Very functional and comfortable to use

It informs me about what influences my sleep quality.
Great to see the difference when using medication or changing diet and/or habits.

S
Stefan
Great device, useful data

Comfortable enough to forget about overnight, easy to pair with the app

V
Verified Anonymous Review
Easy to use

Easy to use and very insightful

M
Mike

I bought the Adam sensor after seeing that Bryan Johnson uses it. I only received it a few days ago and have only done a few measurements so far. Its easy to use - you just wear at the base of the penis before going to bed and start a measurement through the app. App is very easy to use. You unlock your Androage after three measurements which is the best feature of the app as you can compare your measurements to your age. I was surprised that you don't feel it all when you wear at night - its as if its not there. Very comfortable to wear overall and app is good.

V
Verified Anonymous Review

Great product and app

D
Daniel W.

Always wondered what happens overnight. Now I know. Two weeks in and the AndroAge score is a bit above my real age, which has got me going to bed earlier. Interesting stuff.

M
Marcus F.
Better than I expected

Sceptical when I ordered. It's small, the strap is comfy enough that I forgot about it by night three, and the app just works. Would like more battery between charges but that's minor.

K
Kwame A.
Solid

Does what it says. Setup took five minutes.

A
Alvin

So good so far

J
Julien M.

Hardware is excellent. App crashed twice during sync in the first week (iPhone 15). Support sorted it quickly and it's been fine since, but knocking a star because it was annoying at the time.

Thanks Julien, and sorry about the sync issues. That bug was fixed and we appreciate you sticking with it.

P
Peter L.

Honestly just bought it because I was curious. No regrets. Fun to see what a good night vs a bad night looks like.

R
Rahul M.

Comfortable, discreet, consistent. The nightly summary is easy to read and the trends view is where the value is.

A
Andreas P.
Took a few nights to get used to

First two nights I was aware of it. After that no problem. Had no idea how much variation there is night to night depending on how I slept.

M
Michael T.

Didn't expect a number to change my habits but here I am skipping alcohol to try improve my score. Love Androage.

S
Stefan B.

Fit is a bit snug for me.

J
James O.
Excellent customer service

Had a question about my first week of results and got a proper reply from a real person who actually knew what they were talking about. Device is great too.

H
Hiroshi T.
Works as advertised

No complaints. Charges quickly, syncs reliably, report is clear.

C
Carlos M.
Not always what you want to hear

First score was worse than I hoped. But that's kind of the point. Six weeks in and it's moved a fair bit.

O
Oliver B.

Sensor is well built. App gives you the basics but I wanted more detail on the optimize section.

Thanks Oliver - fair point. A lot of updates are coming to app - watch this space.

M
Matthias K.

I'm an engineer and was curious how they'd measure this reliably. Whatever they've done, the readings are consistent across nights and the sensor is way more comfortable than I expected.

R
Ryan K.

Already track sleep, HRV, steps. This fills a gap none of the others cover. Data is clean and the trends line up with what my sleep tracker shows.

L
Luke A.
Good

Does the job. Delivery to Australia took about 10 days.

D
David C.

Was worried it'd be awkward. It isn't. Put it on, forget about it, check the app in the morning.