Harvard Researchers have concluded that regular exercise can reduce risk of erectile dysfunction by 41%. Sex, what is it good for? Other than the obvious, sex lowers stress and blood pressure, increases immunity and heart health, improves self-esteem, may lower risk of getting prostate cancer, enhances quality of sleep, and decreases pain, just to name a few. It's as simple as getting out and walking 5-7 days a week for 30 minutes. Your Life. Your Choice.