It gives an automatic impression of you to your possible mate and shows that person what he or she is dealing with on a physical level, at least from an outward perspective. (bbwcouple.com)
While connecting on the physical level is essential, remember that sex is an interpersonal act that occurs within the context of your unique relationship. (thecouplescenter.org)
You can't comprehend that because your brain operates on a physical level. (religion.blogs.cnn.com)