Ask anybody's body what its repertoire of good feelings includes and it will give you a long list. But bodies also recall what it is like to not have a good feeling.
Chests tighten with the memory of being picked last for anything in elementary school.
Even hearing of someone else's romantic rejection can bring on that familiar knot in your stomach. Too many bodies are burdened with memories of bad sexual feelings. Sexual pain comes in many forms including rape, incest, and molestation. But the body also holds pain from more subtle experiences. If your beloved has harshly rejected your erotic advances or if you spent hours planning an unappreciated date, hairstyle, or dinner, you know that your identity as a sexual man or woman can sense assault.