Teens abstane from sex. It was found that under half of teenage boys had ever had sex, at 47 per cent — a marked drop fromwhen research found 60 per cent of teenage boys were sexually active. How Does It Work? Think about having respect for yourself and having the respect of your partner. See More. It's the best protection and the only guarantee as long as no semen enters the vagina. So would you sign? Remember why you chose abstinence. Remember that your body is not in charge! This survey will only take a few minutes. Thursday 18 April Back to top.