Is your backache killing your sex life? Don’t worry you are not alone. There are millions of people across the world who suffer from exactly the same condition. Most people with a lower back disorder suffer chronic pain for months after having sex. No wonder then that they prefer to abstain instead. Now finally studies are also being carried out by experts on this subject. And for the first time scientists have documented the way the spine moves during sex. Researchers say that they have discovered exactly why certain positions are better than others when it comes to avoiding back