Nov 13, - Don't let lower-back pain halt your sex life. Here are the best sex positions for you to experience more ooh and less ouch. Sep 10, - However, for extension-intolerant men – meaning men who feel pain when they arch their back – this may be a comfortable position. Sexual Position: mSIDE, also known as spooning or sidelying. In this position, the woman and man are both lying on their left sides, and the man is behind her.