Did you know that your erections can tell you more about your heart health than you might think?
Nocturnal erections—those spontaneous erections that happen during sleep—are directly tied to vascular health. When a man stops having them, even for a short period of time, it can be an early warning sign of underlying issues that may increase the risk of heart attack or stroke.
The reason is actually pretty simple. The blood vessels in and around the penis are only about 1–2 mm in diameter, while the arteries around the heart are closer to 3–4 mm. Smaller vessels become restricted faster, which means changes in erectile function often show up years before more serious cardiovascular symptoms (Montorsi et al., 2003). In other words, erectile dysfunction (ED) isn’t just about sex—it can be one of the first visible signs that something deeper is going on.
And yet, most men are guessing when it comes to their sexual health.
We now have access to wearable technology that can track nocturnal erections in real time. These devices are worn overnight and measure how often erections occur, generating an erectile fitness score based on frequency and duration. For the first time, men can actually see what’s happening in their bodies instead of relying on assumptions or waiting until something feels wrong.
This kind of data matters. It allows for earlier intervention, better tracking of progress, and more informed decisions when it comes to treatments—whether that’s medication, lifestyle changes, or therapies such as acoustic wave therapy which is designed to improve blood flow and tissue health. Some devices can even be worn during sex, similar to a traditional ring, to help maintain erections and provide additional support.
But let’s zoom out for a second, because this is where the bigger conversation needs to happen.
Erectile dysfunction is extremely common. About 60% of men will experience ED by age 60 (Feldman et al., 1994), yet most don’t realize that the process often starts much earlier. What’s even less talked about is that penile tissue follows the same rule as the rest of the body: use it or lose it.
The penis is made up largely of smooth muscle, and like any muscle, it depends on regular use and healthy blood flow to maintain its structure and function. Without consistent stimulation and oxygenation, that tissue can begin to break down. Over time, this can lead to penile atrophy, with some estimates suggesting men can lose 15–20% of their size due to disuse and decreased blood flow (Traish et al., 2009).
That’s not just a performance issue—that’s a tissue health issue.
We don’t think twice about going to the gym to maintain muscle mass or prioritizing cardiovascular health to prevent disease, but when it comes to sexual health, there’s still this mindset of waiting until something goes wrong. And by then, the changes are often more advanced and harder to reverse.
The good news? These outcomes are not inevitable.
There is a growing shift toward preventative sexual health—approaches that focus on maintaining blood flow, supporting tissue health, and keeping the nervous system engaged. Early intervention matters. Whether that’s through lifestyle changes, targeted therapies, or consistent sexual health practices, the goal is the same: don’t wait until dysfunction becomes the problem.
Because once symptoms show up, they’re often just the tip of the iceberg.
From a clinical perspective, erectile function should be viewed as a vital sign—something that gives real insight into what’s happening systemically in the body. If we start treating it that way, we open the door to earlier detection, better outcomes, and a much more proactive approach to both sexual and cardiovascular health.
At the end of the day, this isn’t just about preventing erectile dysfunction. It’s about preserving quality of life, maintaining confidence, and continuing to have great sex for years to come.
And really, isn’t that something worth paying attention to?
Author Bio
Eve Hall, Sexual Health Physical Therapist
Eve Hall, PT, is a licensed Sexual Health Physical Therapist specializing in the treatment of sexual health conditions and the pelvic floor in both men and women.
