Do you enjoy cycling? Do you find it exhilarating? Do you find it gets you all pumped up and ready to take on the world? It might do all that for you, but it won't do anything for your sex life. According to a urology journal, some 60 percent of the sampled male cyclists have reported suffering from post-ride genital numbness, or to be more blunt, erectile dysfunction. If you can't get it up, what is all that blood flow and heart racing good for?