Woodn't it be nice if we could go again? If you didn't sing that to the air of the Beach Boys hit, shame on you.  Most men would admit that they need a bit of a rest after one orgasm before they're ready to go again. And according to a report in the US Journal of Sexual Medicine, many scientists are still debating how long after sex the average man has to chill for before he's ready to start over. For men, the recovery phase, or "refractory period", after orgasm is normally the reason cited as to why it is physiologically impossible for men to achieve the one orgasm multiple times. In a recent Men's Health interview, Dr Richard K. Lee, a urologist from the Weill Cornell Medicine Centre in the US, suggested the period can vary widely among individuals, ranging from minutes to, occasionally, a couple of days:

“Unless you’re 14, you’re probably going to need at least an hour or two to become erect after ejaculating."

Lee also argues that certain factors, such as drugs or alcohol intake, and how often you enjoy masturbating, could affect the length of refractory periods. In numerous similar studies, low testosterone levels and old age have had the largest significant impact on refractory period. As you'd probably expect, refractory periods get longer between each session, eventually plateauing around the fifth or six - if you're a real animal. So what's the most common refractory period length for blokes today? Well, Abraham Morgentaler, M.D, associate clinical professor of urology at Harvard Medical School, reckons:

"Teenage boys can have a refractory period of a few minutes; a 30-year-old man is typically unable to have a second orgasm for half an hour or more; and for many men 50 years and older, one orgasm per day may be all they can achieve."

So there you go, fellas! This article was originally posted on JOE.co.uk.