Hello I have a serious issue I am 25 years old and I can't get hard. Not with a female and not even by hand it gets a little bigger but remains soft. The only time I can get it hard is by "bouncing" that's where I sit on a chair and squeeze my legs together and bounce. Let me explain ever since I was little my family use to sit me on there knees and have me bounce up and down they did this alot, this habit stayed with me and I can't stop. I think I have done some serious damage to my testicles, they look shrunken. I'm serious and need help please