The pelvic floor is a group of muscles, ligaments, and connective tissue that spans the base of the pelvis like a hammock. It supports the bladder, bowel, and, in people with a vulva, the uterus and vagina. In people with a penis, it wraps around the base of the penis and supports the prostate. These muscles contract during orgasm, contribute to erection and ejaculation, enable voluntary control over urination and defecation, and play a direct role in how penetration feels. The pelvic floor is, in short, some of the most sexually relevant musculature in the body, and most people never think about it until something goes wrong.
Both weakness and excessive tension (“hypertonic” or overactive pelvic floor) affect sexual function. A weak pelvic floor can reduce orgasm intensity and sensation. An overactive pelvic floor is associated with painful penetration, including conditions like vaginismus, where the vaginal muscles contract involuntarily, and is a common but under-discussed reason sex or toy insertion feels difficult or painful. The goal is not maximum tightness; it is coordinated, responsive muscle function.
How Pelvic Floor Strength Connects to Sexual Sensation
During orgasm, the pelvic floor muscles contract rhythmically. Research published in Neurourology and Urodynamics confirms that pelvic floor muscle activity is a measurable component of orgasm in both sexes. In people with vaginas, stronger and better-coordinated pelvic floor muscles are associated with greater orgasm intensity and improved vaginal sensation. In people with penises, pelvic floor strength contributes to erection firmness and ejaculatory control.
This is the physiological reason why pelvic floor training shows up in sex education contexts, not just postpartum care or bladder health. The muscles matter for pleasure, not only for function.
One important nuance: more tension is not the same as better function. If your pelvic floor is already overactive, which is more common than most people realize, and can manifest as pain during penetration, discomfort with tampon use, or difficulty with toy insertion, then strengthening exercises are the wrong tool. Downtraining (learning to release and relax the muscles) is what is needed. A pelvic floor physical therapist can assess which direction you actually need to go.
Kegel Exercises and Toy-Assisted Training
Kegel exercises are the most widely recommended method for pelvic floor conditioning. They involve contracting and holding the pelvic floor muscles (the same ones used to stop urination midstream), then releasing fully. The release is as important as the contraction.
Weighted kegel trainers and ben wa balls are the most common toys designed to support this work. The mechanics: a weighted insertable item requires the pelvic floor to engage passively to keep it in place, providing a low-level resistance stimulus similar to how light weights work for other muscle groups. Progressive resistance, starting lighter and increasing weight over time, is the approach supported by research on vaginal weighted cones, including a Cochrane review on pelvic floor muscle training for urinary incontinence (Hay-Smith et al., Cochrane Database of Systematic Reviews).
What to look for in a kegel trainer:
- Body-safe material. Silicone, ABS plastic, and stainless steel are non-porous and easy to clean thoroughly. Avoid anything labeled “jelly” or made from TPE/TPR for internal use.
- Graduated weights. A kit that starts light and progresses gives you a genuine training arc rather than a single fixed stimulus.
- Retrieval cord or tab. Standard on all reputable kegel trainers; confirms the product is designed for safe internal use.
- Smooth, body-following shape. Bulbous or egg-shaped designs are generally more comfortable for sustained wear than rigid cylinders.
