Why does my penis always become different sizes? No erection. It's normal.

When the penis is normal, the blood flow will also change due to the change of your mood and external temperature. When you are stimulated by positive emotions such as excitement or passivity, when the outside temperature is high, the blood vessels dilate, the blood circulation increases, and the blood content of the penis increases, and the penis will become larger. On the other hand, when you are frightened, in negative emotions such as nervousness and fear, and when the weather is cold, the blood vessels are strongly collected and supplied, and the blood supply of the penis is drastically reduced, and finally the penis becomes smaller and smaller. This is the specific reason why "my penis is always different in size, and it is normal to have no erection".