When it comes to a tight core, most people picture six-pack abs. But a truly toned core is much more than what you see on the surface. Deep within your loins, the psoas (pronounced SO-az) muscle group partners with other muscles to stabilize and girdle the lower spine, promoting proper body alignment.
As sex writers, what horrified us the most last night was the group date in which the guys tried -- and spectacularly failed -- to teach a sex ed class to adolescents. Their embarrassment about the topic, their ignorance of basic anatomical and reproductive knowledge, their narrow-minded views of what constitutes sex -- these were all glaring examples of how far we have to go in terms of educating not only kids, but adults about sexuality.