Research has shown that the same eating patterns that can cause heart attacks due to restricted blood flow in the coronary arteries can also impede blood flow to and within the penis. The blood flow is needed for the penis to become erect. Diets that include very few fruits and vegetables along with lots of fatty, fried, and processed foods can contribute to decreased blood circulation throughout the body.
The blood vessels in your penis are smaller than the larger veins and arteries in other parts of your body. What that means is the first sign of hypertension, heart disease, high cholesterol, and clogged arteries may not be a stroke or a heart attack. It will often be erectile dysfunction. Regular physical activity reduces your risks for cardiovascular disease (which is awesome), but it also lowers your risk for ED. If there’s a better reason to sweat through a spin class, I can’t think of one.