No, jogging or running can't make your penis bigger. But cardiovascular exercises definitely strengthen the heart, which is the engine that drives all blood flow. This could definitely lead to stronger erections.
Research shows that jogging or running makes sure that blood and oxygen get to all parts of the body well. This is proven to help men increase the size of their penis by at least 20–25% when they have an erection.
Studies also showed that men who run long distances often tend to lengthen and stretch the penile shaft, which is made up of three erectile columns, two corpora cavernosa, and the corpus spongiosum.
Runners develop a more natural gait and strengthen the muscles, tendons, and ligaments of the feet, which activates the nerves connected to the erectile bodies under the influence of testosterone. Deep penile (Buck) fascia, dartos fascia, and penile skin surround the three erectile bodies. The deep penile (Buck) fascia is a thick, deep fascial layer that lies just beneath the tunica albuginea. It connects to the deep fascia of the muscles that cover the crura and bulb of the penis, as well as the ischiocavernosus and bulbospongiosus.
Also, jogging or running regularly can make a big difference in the size of your penis and make it long and healthy. By working out on a regular basis, you improve the flow of blood to the organ and clean out the blood vessels. This gives you more sexual confidence and self-esteem.