It is a sling, not a switch
Your pelvic floor is a layer of muscle slung across the base of the pelvis. It runs front to back from the pubic bone to the tailbone, and side to side between the sit bones. It is not one muscle, and it is not a single on/off switch. It is a group of muscles with several jobs, working together most of the day without you thinking about it at all.
Three of those jobs matter for training.
Support. The floor holds the pelvic organs from below and works as part of the trunk alongside the deep abdominal muscles and the diaphragm. Every time you cough, laugh, lift a bag or stand up fast, pressure inside your abdomen spikes, and the pelvic floor answers it.
Closure. The muscles wrap around the urethra and the anus. Their resting tone is part of what keeps things closed between trips to the bathroom, and their voluntary contraction is what you use when you need a bit of extra control.
Sexual function. Two of these muscles, the ischiocavernosus and the bulbocavernosus, sit at the base of the penis. Cohen, Gonzalez and Goldstein 2016 is the clearest review of the mechanics: contracting them raises pressure inside the erectile bodies, and the bulbocavernosus also compresses the deep dorsal vein. The same muscles are active during ejaculation. That is the anatomical reason this muscle group gets attention beyond bladder control.
They are skeletal muscle, so they train like skeletal muscle
Pelvic floor muscles can be strengthened like any other muscle. They need regular exercise to work well. The difference is that you cannot see them, you rarely use them deliberately, and nobody ever taught you a rep scheme for them.
That is the entire problem KegelPro is built around. There is nothing exotic about the training principle: contract against a load, rest properly, add a little over time, repeat for months rather than weeks. The exotic part is only that the muscle is hidden, which makes technique and feedback harder than it would be for a bicep.
Strength and endurance gains are also the part of this field that is measured most directly. Trials that put a pressure sensor or a clinician's assessment on the muscle, such as Dorey 2004 and Milios 2019, consistently show that a structured program increases measurable pelvic floor muscle strength and endurance. That is the safest thing anyone can say about this training, and it is worth knowing that it is the claim standing on the firmest ground.
Tightening is only half of the specification
The NHS description of a healthy pelvic floor, used in the Oxford University Hospitals NHS FT 2024 patient guide, is that the muscles should be able to tighten and lift up, hold, and then fully relax and let go. All three. A muscle that can contract hard but never fully releases is not a strong pelvic floor, it is a stiff one, and stiffness comes with its own problems.
This is why every KegelPro session ends with a release exercise rather than a contraction, and why the rest phase between repetitions is labeled "release" instead of "rest." You are training the letting go as deliberately as the squeezing. Faubion, Shuster and Bharucha 2012 and Afyouni 2025 both describe patterns where the pelvic floor struggles to relax, and where more strengthening is the wrong answer.
What an app can and cannot tell you
KegelPro can teach you a routine, time it, and keep you honest about consistency. It cannot examine you. It has no way of knowing whether your pelvic floor muscles are weak, overly tight, or already working normally, and it will never tell you that it does. A pelvic health physiotherapist can assess that, and the assessment genuinely changes what you should be doing.
Set your timeline accordingly too. Professional guidance and the trial literature both put meaningful strength change at three to six months of consistent training, not weeks, with maintenance continuing after that.
When to talk to a professional
Consider booking an appointment with your doctor or a pelvic health physiotherapist if:
- You are not sure you are contracting the right muscles, even after using the self-checks
- You have had prostate surgery, or you have one coming up
- You have any pain in the pelvis, genitals or rectum, or pain with ejaculation
- You have leakage of urine or stool that bothers you
- You have trouble emptying your bladder
- You have trained consistently for three months and nothing has changed
Pelvic floor exercise should never hurt. If it does, stop and get it looked at.