Erection quality

Erection Quality: How to Track It Honestly

September 29, 2026 · 9 min read

Erection quality is not one number. It is a bundle of things that can move independently: how firm an erection gets, how reliably it shows up when you want it, whether it lasts as long as you need, how much stimulation it takes, and whether you still wake up with one now and then. Tracking it honestly means writing a few of these down the same way for a few months, and then reading the result with more scepticism than feels natural.

This article covers what researchers actually measure, the four ways self-tracking reliably fools people, and a log simple enough that you will keep it. What it does not offer is a promise that tracking will make anything better. It will make change visible, which is a smaller and more useful thing.

What “erection quality” is made of

When clinicians ask about erections, they do not ask one question. The pieces they separate are roughly these:

Firmness. How rigid the erection gets at its peak.
Reliability. How often you get an erection when you want one.
Maintenance. Whether it holds until you are finished, or fades partway through.
Effort. How much, and how long, stimulation is needed to get there.
Sleep and morning erections. Erections that happen without arousal, during REM sleep.

These do not always travel together. A man can have full firmness on the occasions it happens and still find it less reliable than a year ago. Another can be reliable but notice that holding the erection takes more focus. If you only track one dimension, you can miss a change in another, or misread a change in one as a change in all of them.

What researchers use to measure it

Every standard measure in this field is a self-report. There is no blood test or scan that grades erection quality in daily life, so research relies on structured questions. Three are worth knowing because you can borrow their logic.

The Erection Hardness Score (EHS). One question, four answers: 1 means larger but not hard, 2 hard but not hard enough for penetration, 3 hard enough for penetration but not fully rigid, 4 completely hard and fully rigid. Mulhall and colleagues validated it as a research measure in 2007 in the Journal of Sexual Medicine. It covers firmness only. We explain each grade in detail in the Erection Hardness Scale guide.

The International Index of Erectile Function (IIEF). Published by Rosen and colleagues in 1997 in Urology, it has 15 questions covering erections, orgasm, desire and satisfaction, and asks about the past four weeks. Its erection questions separate the dimensions listed above, which is exactly why it is useful as a model.

The IIEF-5. A five-question short form, published by Rosen and colleagues in 1999 in the International Journal of Impotence Research, scored from 5 to 25 and asking about the past six months.

The practical lesson is in the recall windows. Four weeks and six months are long stretches to remember accurately. These questionnaires were designed for clinical visits, where a snapshot is all that is available. At home you can do better: record close to the event and let the months build up on paper instead of in memory.

We are not going to give you score thresholds from these questionnaires to interpret on your own. They were built for use alongside a clinician, and a number without that context tends to produce either false comfort or false alarm.

Four ways self-tracking goes wrong

Most men who track erection quality make the same mistakes, and none of them are about discipline.

1. Memory flattens slow change

A drift from mostly grade 4 to mostly grade 3 over eight months is almost invisible from the inside. You notice the conclusion one day (“this has gotten worse”) with no idea when it started or how large it is. The opposite also happens: a recent good month overwrites a poor year. Written records are the only fix, because they do not reinterpret themselves.

2. Grading the evening instead of the erection

If sex went well, a 3 quietly becomes a 4. If it went badly, a 3 becomes a 2. The scale asks about rigidity, not about how the evening felt. Score the physical state, and note separately whether it lasted as long as you wanted.

3. Watching yourself while it happens

Masters and Johnson, in their 1970 book Human Sexual Inadequacy, named this spectatoring: mentally stepping outside the moment to monitor your own performance. It is one of the more reliable ways to make an erection falter, and a tracking habit can invite it. The rule is simple: never rate during sex. Log afterwards, in under a minute, and then stop thinking about it.

4. Starting after a bad week

Nearly everyone starts tracking right after something went wrong. That creates a statistical trap called regression to the mean: an unusually poor stretch tends to be followed by a more ordinary one, whether or not you do anything. If you start a log and change your habits on the same day, the improvement that follows will feel like proof that the change worked. Often it is just the return to your normal level. This is the main reason to build a baseline before changing anything.

A log you will actually keep

Keep it short. A log that takes five minutes gets abandoned in week three. Per entry, record:

EHS grade (1 to 4) at the peak.
Held until finished? Yes or no.
Context. Partnered, solo, or on waking. Pick one context as your main series and stay with it; mixed contexts cannot be compared.
Morning erection noticed this week? Yes or no, once a week rather than daily.
Three context notes. Hours slept the night before, alcohol in the previous 24 hours (yes or no), and a rough stress level (low, medium, high).

Log within an hour, not at the end of the week. Retrospective ratings drift toward whatever mood you are in when you write them.

Then follow a sequence:

Four weeks of baseline. Change nothing. You are measuring your normal scatter.
Change one thing at a time. Sleep, alcohol or training, not all three at once, or you will not know which one mattered.
Compare monthly averages to the baseline. Not individual entries, not weeks.

How to read the numbers

Expect scatter. A month that reads 4, 3, 4, 4, 3, 4 is a normal month, not a decline. Weekly averages bounce around enough that two consecutive weeks rarely mean anything.

What does count is a shift in the monthly average of about a full grade that holds for two to three months, or a clear change in how often the erection lasts until you are finished. Your context notes help here: if the poor entries cluster on short-sleep nights or after drinking, you have learned something specific about your own pattern, which is more useful than any population average.

Keep attribution modest. Even a clean improvement after a change is not proof the change caused it; life changes in many ways at once. A log is good at showing that something moved and less good at showing why.

What is associated with better or worse erection quality

The evidence here is mostly observational, which means associations, not proven causes, and unknown effect sizes for any individual.

Sleep, alcohol and stress are the factors men most often see in their own logs within the same week. Smoking is one of the strongest modifiable factors linked to erectile difficulty in population studies; in the Massachusetts Male Aging Study (Feldman and colleagues, 1994), 52 percent of 1,290 men aged 40 to 70 reported some degree of erectile difficulty, and smoking was associated with the more severe categories. Physical activity and body weight are linked through the same blood-vessel pathways, though men who exercise more also differ in many other ways.

One area has a randomized trial behind it. In 2004, Dorey and colleagues randomised 55 men in the British Journal of General Practice to pelvic floor muscle exercises or lifestyle advice alone, and the exercise group reported better erectile function after three months. It is a small trial, with improvement measured by self-report, but it is a real trial. If your log shows a drift and you want a concrete place to start, pelvic floor exercises for men explains how to find the muscles and how much training is sensible.

When the log says: see a doctor

Tracking is for noticing, not for diagnosing. Stop logging and book an appointment if you see:

A sustained decline of about a grade that has held for two to three months.
A sudden change rather than a gradual one.
Morning and sleep erections that have consistently stopped over weeks. Because they occur without arousal, their disappearance is useful information for a doctor to interpret.
Pain, a new or worsening curve, or a lump in the shaft.
An erection that will not go down after several hours. That is an emergency; go to an emergency room.

There is a reason beyond sex to take a persistent change seriously. A 2014 systematic review by Gandaglia and colleagues in European Urology linked erectile difficulty with cardiovascular disease and found that erectile symptoms often appear before cardiac ones. The blood vessels involved in erection are smaller than the heart’s, so problems can show up there first. A log with dates and grades also makes that conversation with a doctor much more concrete than “it feels worse lately.”

What we will not tell you

We will not tell you that tracking improves erection quality. It does not, by itself. We will not call any of this clinically proven, because apart from the small pelvic floor trial above, the evidence is observational. And no approach works for everyone.

What an honest log can do is narrower: replace a vague, anxious impression with a series you can compare month to month, and tell you plainly when nothing has changed. That is also why the PhalluShape progress log records erection quality as a self-assessment alongside the size measurements, rather than folding everything into one number.

Questions

What does erection quality mean?

Erection quality is not one measurement. It usually covers how firm an erection gets, how reliably it happens when you want it, whether it lasts as long as you need, how much stimulation it takes, and whether you still have erections during sleep and on waking. Research questionnaires ask about several of these separately, because they can change independently of each other.

How can I measure my erection quality at home?

The simplest validated tool is the Erection Hardness Score, a four-point scale from 1 (larger but not hard) to 4 (completely hard and fully rigid). Score yourself in the same kind of situation each time, write it down soon afterwards, and add whether the erection lasted as long as you wanted. A single score says little; a few months of scores show a trend.

How long do I need to track before a change means something?

Plan on a baseline of about four weeks before you change anything, then compare monthly averages. Day-to-day scatter is large, so a difference between two weeks is usually noise. A shift of a full grade that holds for two to three months is the kind of change worth taking seriously, in either direction.

Can tracking my erections make them worse?

It can, if you start monitoring yourself during sex. Masters and Johnson described this in 1970 as spectatoring: watching your own performance instead of being in the moment, which tends to feed the anxiety that interferes with erections. The fix is to log afterwards, briefly, and never to rate yourself while it is happening.

Sources

Mulhall et al. 2007, Journal of Sexual Medicine — Validation of the Erection Hardness Score
Rosen et al. 1997, Urology — The International Index of Erectile Function (IIEF)
Rosen et al. 1999, International Journal of Impotence Research — Development of the abridged five-item IIEF (IIEF-5)
Masters & Johnson 1970, Human Sexual Inadequacy — description of spectatoring
Feldman et al. 1994, Journal of Urology — Massachusetts Male Aging Study (n = 1,290)
Dorey et al. 2004, British Journal of General Practice — randomised controlled trial of pelvic floor muscle exercises (n = 55)
Gandaglia et al. 2014, European Urology — systematic review of erectile dysfunction and cardiovascular disease