Exercise is one of the most effective non-drug approaches to improving erectile dysfunction. A meta-analysis of 11 randomized controlled trials found that aerobic exercise improved erectile function scores by an average of 2.8 points on a standard clinical scale, with bigger gains for men who started with worse symptoms. Men with severe ED saw improvements of 4.9 points, while those with mild ED gained 2.3 points. The American Urological Association now recommends that clinicians counsel men with ED on increased physical activity as part of treatment.
Why Erections Depend on Blood Flow
An erection is fundamentally a cardiovascular event. When you’re aroused, nerve signals trigger the release of nitric oxide, a molecule that relaxes blood vessel walls and allows blood to rush into the penis. Anything that reduces nitric oxide production or damages blood vessel linings will make erections weaker or harder to maintain.
This is why ED and heart disease share the same root causes. Poor diet, inactivity, and excess weight create a cycle of damage in your blood vessels: oxidative stress breaks down the chemical your body needs to produce nitric oxide, which leads to even more oxidative stress and even less nitric oxide. The blood vessels in the penis are smaller than those in the heart, so they tend to show damage first. Men with ED have roughly a 47% higher risk of cardiovascular events compared to men without it, and between 44% and 75% of men with cardiovascular disease experience some degree of ED.
Exercise interrupts this cycle directly. Aerobic training improves the ability of blood vessels to dilate on demand, preserves the enzymes responsible for nitric oxide production, and reduces the oxidative stress that degrades those enzymes. In animal studies, exercise maintained healthy enzyme ratios in penile tissue even when subjects were fed a high-fat diet designed to cause vascular damage.
Aerobic Exercise Has the Strongest Evidence
Cardio is the type of exercise most consistently linked to better erectile function. Running, brisk walking, cycling, and swimming all qualify. The connection appears to work through multiple channels: aerobic exercise reduces body fat, improves cardiovascular fitness, lowers blood pressure, and increases nitric oxide availability in blood vessels throughout the body, including the penis.
The testosterone angle matters too. In men with ED, testosterone levels correlate positively with cardiovascular fitness and negatively with body fat percentage, particularly abdominal fat. A study comparing different fitness markers found that only cardiorespiratory fitness (measured on a stationary bike test) had a statistically significant positive correlation with total testosterone. Grip strength and jumping power did not. This suggests that aerobic exercise, which burns fat and builds cardiovascular capacity, is more effective at raising testosterone in men with ED than strength training alone.
That doesn’t mean you should skip the weight room entirely. Resistance training builds muscle, improves insulin sensitivity, and supports overall metabolic health. But if you’re choosing one type of exercise specifically to address ED, the research favors cardio.
How Much Exercise You Need
The most consistent recommendation across studies is 160 minutes per week of moderate-to-vigorous aerobic exercise, broken into four 40-minute sessions. This is slightly more than the general public health guideline of 150 minutes per week, but the difference is small. Moderate intensity means you can talk but not sing during the activity. You can mix in bursts of higher intensity, like intervals of jogging during a brisk walk.
Data from men with ED and coronary heart disease supports this threshold from another angle: patients who exercised fewer than four hours per week had predominantly moderate to severe ED, while those who exercised more than four hours weekly had predominantly mild ED.
When to Expect Results
Most studies that showed meaningful improvements in erectile function ran for six months. That’s the timeframe supported by the broadest body of evidence. Six months of consistent aerobic exercise at 160 minutes per week produced measurable improvements in men whose ED was linked to inactivity, obesity, high blood pressure, metabolic syndrome, or cardiovascular disease.
This isn’t a quick fix. The vascular changes that improve erections, such as better blood vessel dilation and increased nitric oxide production, take time to develop. If you’re also losing weight, the metabolic benefits compound over months. In one landmark trial, about 31% of obese men with ED fully restored normal erectile function through lifestyle changes including exercise and diet over a two-year period. Only 5% of the sedentary control group saw the same result.
Pelvic Floor Exercises Work Differently
Pelvic floor exercises (often called Kegels) target the muscles at the base of the penis that help trap blood during an erection and contribute to rigidity. These work through a completely different mechanism than aerobic exercise. Instead of improving blood vessel health, they strengthen the muscles that physically support the erection once blood flow arrives.
In a randomized controlled trial, 40% of men who performed pelvic floor exercises with biofeedback guidance regained normal erectile function, and another 34.5% saw improvement. Only 25.5% saw no change. The exercise program included contracting the pelvic floor muscles in lying, sitting, and standing positions, along with a gentle contraction while walking and a “squeeze out” contraction after urinating. These are simple exercises you can do at home, though initial guidance from a physical therapist helps ensure you’re engaging the right muscles.
The best approach for most men is combining pelvic floor work with regular aerobic exercise. They address different parts of the problem, and the benefits stack.
One Form of Exercise That Can Backfire
Cycling is a notable exception to the rule that more exercise means better erectile health. Data from the Massachusetts Male Aging Study found that men who cycled three or more hours per week had an odds ratio of 1.72 for developing moderate or complete ED, a level classified as a health risk. The pressure from a traditional bike seat compresses the nerves and arteries that supply the penis, potentially causing long-term damage with enough accumulated hours.
Interestingly, moderate cycling under three hours per week actually had a protective effect, with an odds ratio of just 0.61 for ED. So occasional cycling is fine and possibly helpful. The risk comes with high-volume riding. If you cycle regularly, a no-nose saddle or a seat with a wide cutout can reduce perineal pressure significantly. Standing periodically during rides also helps.
What This Means in Practice
Exercise works best for ED that has a vascular or metabolic component, which accounts for the majority of cases in men over 40. If your ED is linked to being overweight, having high blood pressure, prediabetes, or simply being sedentary, exercise addresses the underlying problem rather than just masking symptoms. It also carries no side effects and improves your cardiovascular health at the same time, which matters given the strong overlap between ED and heart disease risk.
The practical target is four sessions per week of brisk walking, jogging, swimming, or similar cardio lasting about 40 minutes each, combined with daily pelvic floor exercises. Expect gradual improvement over several months rather than immediate results. For about a third of obese men with ED, this approach can resolve the problem entirely. For many others, it produces meaningful improvement that may reduce the need for medication or make medication work more effectively.