Bruxism, the grinding or clenching of teeth during sleep, affects somewhere between 8-31% of adults. Most of them got a night guard from their dentist and were told the problem was managed. The teeth are protected. The bruxism itself is ignored.
This is a mistake, and it matters for more than your enamel.
Bruxism is a symptom of chronic nervous system dysregulation. The jaw clenches during sleep because the nervous system, which should be in a recovery and downregulation state during sleep, is still running elevated sympathetic tone. The body finds the jaw as a site to express that tension. It also finds the shoulders, the neck, the gut, and, very commonly, the pelvic floor.
These aren't separate problems. They're the same problem expressing in multiple places.
The tension network
The relationship between jaw tension and pelvic floor tension is well-documented in pelvic health research. Physical therapists who specialize in pelvic floor dysfunction have noted for decades that the two tend to co-occur. When one is chronically tight, the other often is too.
The mechanism is partly anatomical and partly neurological. Fascially, the body is connected from jaw to pelvis through a continuous chain of tissue. But more directly, chronic sympathetic tone creates a system-wide pattern of bracing. The nervous system activates its threat-preparation circuits and multiple muscle groups respond simultaneously.
The jaw and the pelvic floor are both involved in the body's bracing response. Both are sites where chronic stress and unresolved tension accumulate. Men who clench at night are revealing, through their sleep behavior, that their nervous system hasn't fully downregulated. The same physiological state that's keeping their jaw active is almost certainly doing something similar in the pelvis.
Why a hypertonic pelvic floor matters for PE
The pelvic floor's role in ejaculation is direct. The bulbospongiosus and ischiocavernosus muscles coordinate with the sympathetic nervous system to produce the ejaculatory sequence. When these muscles are chronically contracted, partially activated at baseline rather than at rest, the threshold for ejaculation drops.
A pelvic floor at 60% activation doesn't need much additional input to tip into the ejaculatory reflex. The threshold is already halfway there.
Men with PE who also grind their teeth, who wake up with jaw soreness, who have a night guard prescribed, should be working with a pelvic floor specialist or at minimum incorporating pelvic floor release work into their protocol. The kegel advice most men receive is wrong here; strengthening a hypertonic pelvic floor makes the problem worse. What's needed is the reverse: eccentric release, stretching, and parasympathetic nervous system activation.
Recognizing the pattern in yourself
A few signs that tension patterning, rather than just weakness or conditioned habits, is the primary driver of your PE:
Bruxism: If you've been told you grind your teeth, or if you wake up with jaw soreness, temples that feel tight, or dental wear, you have direct evidence of chronic nighttime sympathetic excess.
Shoulder and neck tension as a baseline: Men who routinely carry significant tension in the upper traps, neck, and jaw often have the same pattern throughout the body. The tension isn't localized to the upper body.
Holding your breath during stress: Breath-holding is another expression of the same bracing pattern. If your default response to mild stress is a held or shallow breath, this is the nervous system doing what it does to the jaw and pelvic floor in a different location.
Pelvic awareness in the gym: If you notice your core and glutes are already activated at baseline, if releasing into a fully neutral hip position feels uncomfortable, the pelvic floor is likely braced as part of that pattern.
PE that gets worse with life stress: Bruxism typically tracks with psychological stress load. If your PE is clearly worse during high-stress periods and better when you're relaxed, the tension patterning hypothesis fits.
The release approach
Treating the tension pattern requires working on it from multiple directions simultaneously, because the nervous system is maintaining it centrally, not just locally.
Pelvic floor release: Supine butterfly stretch (soles of feet together, knees falling out), child's pose with wide knees, and deep squat holds with active breathing are the main tools. The focus is on exhale-driven release, not muscular activation.
Jaw release: Soft jaw exercises, massaging the masseter muscles (the muscle that bulges when you clench), and placing the tongue behind the top teeth in a rest position reduces the jaw's contribution to the bracing pattern.
Vagal activation: Long exhalation breathing, cold water on the face, and humming activate the vagus nerve and shift the nervous system toward parasympathetic dominance. This reduces the system-wide tension signal.
Sleep environment: Men with significant bruxism often benefit from magnesium glycinate before bed, which supports nervous system downregulation and reduces nocturnal teeth grinding in several studies. The magnesium-serotonin-sleep connection also supports ejaculatory threshold through a separate pathway.
The broader point
PE assessment that stops at "do kegels and practice edging" misses the structural context driving the problem. A man who grinds his teeth at night, carries his shoulders at his ears, holds his breath under pressure, and has a chronically braced pelvic floor has a nervous system regulation problem. The PE is one downstream expression of it.
Control: Last Longer's assessment is designed to identify the actual factor pattern driving each individual's PE, because the right intervention depends on what's actually going on. Men with tension-based PE need release and nervous system downregulation work, not strengthening. The daily protocol built for them reflects that.
If you're wearing a night guard, that's your dentist protecting your teeth from a symptom. The symptom itself has more to tell you.