Your penile size, whether flaccid or erect, depends on the amount of blood that enters your organ through the arteries called the pudendal arteries. It also depends on the amount of blood contained in the central spongy tissues of your penis that become filled with blood when the penis becomes erect. The amount of blood in these spongy tissues largely determines your penile size. Thus, if you can improve your overall health, and thus your penile blood supply, you can also improve your penile size. Some of the factors that may affect the blood supply to your penis include your diet, smoking, level of relaxation, room temperature and a loving relationship. When it comes to diet, a low-fat diet can help you to have a better penile blood supply as well as prevent heart disease. A diet high in fat, particularly animal (saturated) fat, will increase your blood cholesterol level. This will, over time, result in your arteries becoming narrower, including the pudendal arteries that carry blood into your penis. The narrowing of your arteries can also result from smoking, and this will cause a higher heart disease risk as well as reduce your penile blood flow. This reduced penile blood flow may also weaken your ability to become erect. By being able to relax deeply during sexual intercourse, you can help the smooth muscle tissue surrounding the pudendal arteries to relax. This allows the muscle tissue to relax as well, allowing an increase in penile blood flow. On the other hand, if you have anxiety during lovemaking, the muscle tissue will contract. This will in turn cause the pudendal arteries to constrict slightly, thus limiting the blood flow into the penis. Having anxiety during lovemaking will also send excess blood away from your body, including the penis, and out towards the limbs. In a room which has a temperature which you find is rather cold, you will find that your penis may seem to reduce in size, while your scrotum will become tighter and hug your body. But should you increase your temperature, such as after a hot shower, your penis will look considerably larger and the scrotum will hang much lower. This is because a relatively warm temperature is relaxing. It will increase the penile blood and result in the scrotum becoming looser. Finally, a loving and log-term relationship with your partner will enable you to relax much more and reduce any anxiety you may have while having sexual intercourse. Knowing your lover well allows you and your penis to relax, and this will help you to have a larger penile size.