I have no idea how I was able to, either. I guess 5 minutes would become 10, and 10 30, and next thing I know, it's 4 AM!
Also, I dunno why exactly I call it abusing myself.
I'm guessing because I'd feel guilty fir doing it cause my grandparents are very conservative and would be very upset if they knew that I masturbated, though they never found out about it, or my porn problem. Also, at school, kids often make masturbation seem like a gay person thing/loser thing/morally bad in some cases. I think I may be cause my neighborhood is a very conservative one in the most conservative part of my state. As a result, I'm insecure about masturbating.
Also, i never used lube, because i was Always too embarrassed to secretly buy it, so I'd often hurt after going for 4 in a row.
I'm glad to know, from your word that it's good and healthy, and of no shame. I may want to be careful about going overboard with it, though.