All sort of exercise revives the circulation, also in the genitals. Always swim nude when possible. It is easy to increase the amount of exercise in everyday life. There are always stairs to take or places to walk to, things to carry, yards to clean up and housework to do manually. Learn to recognize and utilize every little possibility for exercise. When doing yard work, leave the machinery in the shed and do the chores manually with good tools, make it feel like you are exercising and breathe rhythmically. In addition, the selection of actual sports is endless.
It is very useful for men to train their pelvic floor muscles and simultaneously the muscle that is around the “root of the penis” = the lowest part of penis. Pudendal nerve that controls the pelvic floor also controls the penis. This means that conscious and strong muscle contraction in the pelvic floor also contracts the muscles in the penis. This tension (5–7 seconds at the time, 10–20 times in each training session) will enforce the muscles, increase the circulation and improve the nerve functions, like muscle exercises normally do. This all is beneficial to the operation and health of the rectum, and enforces the capacity for better and stronger erection. During erection men also produce more of the vital testosterone. A man gets combined and even stronger benefits (testosterone, stronger pelvic floor muscles and better circulation/erection) when doing pelvic floor exercises during erection.
Bicycling (or dressage riding or sitting on undivided saddle chairs) is highly NOT recommended for men if the saddle is putting ANY pressure to the “root of the penis” as they usually are. Unfortunately bicycle saddles always cause more or less pressure on the penis. If one has any problems with erection, it’s smart not to bicycle but find other exercises. Most men in bicycling are familiar with the bad reputation of bicycle saddles for genital health. One thing to try is to adjust the saddle “nose” leaning slightly down to eliminate the pressure on the root of penis.