LuShes, you are making me blush. It's all about the relation between hypertension, circulation, and potency. If I took a decongestant containing Ibuprofen, the same effect. Limp, even in the presence of an eager woman. It's all in the blood. Caffeine, like alcohol by the way, while stimulating the heart, simultaneously constricts blood vessels, raising the BP. It's all just basic physiology. There is a crucial distinction between EXCITEMENT and arousal that needs to be made. And I fear I am in danger of treading too near the borderline here, should I go any further.