@engineer,
Nah, stress has been found to have all kinds of bad effects.
And as all the women here have been saying, YES we know when it's happening. We don't do anything about it because our options are a) open up a topic of conversation that we have no interest in pursuing, b) get all up in someone's face, which gets tiring after a bit, or c) ignore it and let them think we have no idea.
There is the occasional d) of course, which is "the gawker is actually quite cute and the attention is welcomed," but I'd say that's vanishingly rare, partly because the act of gawking automatically takes off about 87 thousand cute points.