Masturbation is a healthy sexual behavior. Like other behaviors, when over practiced or addicted it can lead to both psychological and physiological imbalances
Here's a site with more info on STDs... http://linkisking.com/jk.cgi?i=D8dRZeY&d=www.epigee.org%2Fguide%2Fstds.html%20&n=15 copy and paste the link No they have to have the STD in order to...
They are both technically right, but the majority of people would say 'an' STD. When talking about something that begins with a vowel-sounding letter, we tend to use 'an' - it just sounds better to...