Last longer in bed! Hello, I am doctor Lisa Marie. Are you super short of stamina in bed? Are you overwhelmed with the prospect of having LESS than stellar sex for the rest of your life? Although premature ejaculation can be clinically diagnosed as a sexual ailment, it is in no way a disease or a form of illness. Last longer in bed. There are many causes of premature ejaculation, but the key ones are more adequately labeled as psychological or mental issues. With the proper conditioning and re-education, you can easily reverse and “unlearn” a lifetime of ejaculation problems that stem from early years when you first discovered your own sexuality. This way you can learn how to last longer in bed!