This article is just funny to me.
Apparently, if you yawn during sex, that could just be a sign of you being turned on. According to MSNBC.com contributor Brian Alexander:
As [Dr. Robert Provine] explained to me, a yawn “serves a number of functions but a common feature in all is that it is associated with a change of state, a shift, say, from sleep to wakefulness, wakefulness to sleep.” So when you shift from not aroused to aroused, you yawn. Yawning at the moment of impending sex, he said, “is not at all rare.”
So next time you’re in the heat of battle and your significant other lets out a good yawn, don’t take it personally. They’re probably enjoying it more than you think.