Recently i have read some articles stating that the testicles can double in size during arousal, however according to my own experience i have never noticed any increase. My testicles just become harder and the scrotum pulls them more tightly against the body. Has anyone notice an increase in the testicles size during arousal?
They do increase in size but not double. During arousal vasocongestion occurs - more blood rushes to the genitals. Yes, they become harder. They do become a little bigger but probably not enough to notice.
The scrotum will pull them up against the body as you approach orgasm.
You're NORMAL. Hope it helps.