Im horny all the time. I wake up hard. I'm eating and I'm hard. I masturbate at least 5 times a day
A daily jerk-off keeps the prostate supple and disease-free. The prostate is a gland and a gland needs to be stimulated.
The reason why so many older males develop enlargement and cancer is that the prostate is no longer stimulated and thus becomes harden.
There is an old adage that still rings true: "use it or lose it."