The term erectile dysfunction refers to a recurring and persistent condition where a man is unable to achieve or maintain an erection and complete sexual intercourse. In most cases, erectile dysfunction is a sign of a deeper, underlying problem and many doctors consider it one of the earliest signs of heart disease.

Cycling is a fun and effective form of exercise, but you might worry that pressure from a bicycle saddle can cause urinary, sexual and prostate problems. With precautions, you can enjoy your bike ride without causing any long-term damage.

Erectile dysfunction (ED) is the inability to achieve or maintain an erection sufficient for sexual intercourse at least 25 percent of the time, according to the Mayo Clinic. ED becomes more common as men age but is not actually a normal function of aging.