Do Kegel Exercises Increase Size? The Honest Answer

Kegel exercises are not an established way to permanently increase penis length or girth. Research on pelvic floor rehabilitation has measured outcomes such as erectile function and urinary control, not a reliable enlargement effect.

If you came for a size-increase routine, this page does not offer one. The research comparison explains which outcomes were actually studied. If a professional has recommended pelvic floor training, the technique guide and blank printable record can help you follow and document that advice.

Why kegels cannot grow the penis

The penis is not a muscle. According to Cleveland Clinic, its shaft is made mostly of spongy erectile tissue — two chambers called the corpora cavernosa and one called the corpus spongiosum — that fill with blood during an erection.

You cannot train spongy tissue the way you train a bicep. Exercise builds muscle fibres; it does not lengthen erectile chambers or the tough sheath (the tunica albuginea) that surrounds them.

Your pelvic floor muscles are a different story. They sit at the base of the penis, and two of them matter most for erections:

• Ischiocavernosus — wraps around the base of the erectile chambers and squeezes to raise pressure inside them
• Bulbospongiosus — surrounds the bulb of the penis, helps maintain rigidity and powers ejaculation

These muscles do not add size. They help control how much blood stays in the penis, which affects how hard and full an erection gets.

What kegels actually do for erections

The best evidence comes from a randomised controlled trial by Grace Dorey and colleagues, published in the British Journal of General Practice in 2004.

The intervention combined pelvic floor exercises, biofeedback and lifestyle advice; the comparison group initially received lifestyle advice alone. The researchers assessed erectile function, not penile enlargement. Results from that supervised programme are not a prediction for an individual reader or the Defy app.

Why firmer erections can look and feel bigger

This is where the size question gets more interesting.

An erection is not on-off. It is a spectrum from partly full to completely rigid. A partial erection is shorter, softer and bends more easily than a full one. Many men with mild ED, or who are stressed, tired or out of shape, are rarely reaching full rigidity.

If kegels help you get closer to 100% firmness, you may notice:

1. A fuller erection that reaches its natural maximum length
2. Better angle and stability during sex
3. Erections that last longer before softening
4. A firmer feel for you and your partner

None of that changes your anatomy. It changes how much of your existing size you actually use. Our guide on how to stay hard covers the other factors that feed into this.

If pelvic floor training has been recommended

Use the technique guide and hospital demonstration to understand the movement, then follow advice appropriate to you. The blank practice record leaves repetitions and hold times open rather than assigning everyone the same routine.

Do not add volume to pursue a size change. Seek advice about pain, difficulty relaxing or persistent erectile symptoms. An article cannot determine whether strengthening is suitable for you.

What about things that claim to increase size?

If size itself is your goal, be sceptical. A 2021 systematic review in BJU International looked at penile enhancement studies from 2010 to 2019. Traction devices, fillers and surgery changed dimensions in some men, but the reviewers concluded the overall quality of evidence was low — too low to make firm recommendations.

Pills, creams and jelqing have no reliable evidence at all, and aggressive stretching or pumping can cause injury.

Two things that are safe and genuinely help how size appears:

• Losing excess belly fat. The fat pad above the pubic bone can bury part of the shaft. Losing weight can reveal length that was already there.
• Improving erection quality. Kegels, cardio, sleep and not smoking all support blood flow.

Our practical guide to penis size covers these options in more detail.

Is your size actually normal?

Most men who worry about being small are not. A systematic review of up to 15,521 men, published in BJU International in 2015, found:

• Average erect length: 13.12 cm (about 5.2 inches)
• Average flaccid length: 9.16 cm (about 3.6 inches)
• Average erect girth: 11.66 cm (about 4.6 inches)

Flaccid size also varies a lot with temperature and stress, and says little about erect size. See average penis length by age for more context.

What progress looks like

If you train consistently, here is a realistic timeline:

• Weeks 1-3: Better awareness and control of the muscles. Erections usually do not change much yet.
• Weeks 4-8: Many men notice slightly firmer erections and better control.
• Months 3-6: This is where the Dorey trial saw significant improvements, with further gains at six months.

Your length and girth will stay the same. Your erections may not.

The bottom line

Does kegel exercises increase size? Not in terms of length or girth — no research supports that. What kegels can do is strengthen the muscles that help keep blood in the penis, leading to firmer, fuller and more reliable erections. For many men, that is the improvement that matters most in the bedroom.