Beyond cardio, resistance training is critical for sexual function. Data shows men who actively maintain muscle mass as they age are three times less likely to suffer from erectile dysfunction, low desire, and dissatisfaction with sex.

Viagra was originally tested as a heart medication for angina. Researchers realized its potent side effect when, contrary to typical trial behavior, male participants were reluctant to return the leftover pills and were observed sitting awkwardly to conceal erections. This user behavior signaled a massive alternative market.

After years of successfully intensifying hormonal therapy, the focus in prostate cancer is shifting toward de-intensification. Researchers are exploring intermittent therapy for top responders and developing non-hormonal approaches like radioligands to spare patients the chronic, life-altering side effects of permanent castration.

Contrary to the popular focus on Kegels, an overly tight pelvic floor—often from stress or injury—can cause erectile dysfunction, painful sex, and premature ejaculation. For these individuals, relaxation exercises are more beneficial than strengthening, which can worsen symptoms.

Instead of relying on supplements, performance medicine uses FDA-approved drugs off-label to optimize health. The predicted stack includes testosterone (muscle), tirzepatide (fat loss), tesamorelin (recovery/sleep), tadalafil (blood flow), and oxytocin (stress), each drastically outperforming its supplement counterpart for a specific health goal.

Nocturnal erections serve as a comprehensive indicator of a man's cardiovascular, metabolic, hormonal, and sleep health. Unlike metrics like muscle mass, this biological function cannot be faked or directly trained at the gym; it's an honest signal of the body's underlying condition.

After orgasm, the hormone prolactin increases, causing the refractory period. Neuroscientist Andrew Huberman explains that this response can be blunted. Supplements like P5P (a form of vitamin B6) can inhibit prolactin to a degree, thereby shortening the refractory period and allowing for quicker subsequent arousal.

Data shows that engaging in 150 minutes of moderate-intensity cardiovascular exercise per week yields improvements in erectile function scores equivalent to those from medications like Viagra. This highlights the power of lifestyle changes over pharmaceutical intervention for sexual health.

Erectile dysfunction is a "canary in a coal mine" for cardiovascular health. The same blood vessel issues that cause difficulty with erections often manifest in the heart 3-5 years later, positioning sexual health as a key early indicator of systemic health problems.