No, it's caused by too much anxiety over coming too soon. Counting sheep or going over stock quotes in your head only compounds the problem by not allowing you to focus on the pleasure of the experience and most importantly, to relax. Only if you haven't had the really good ones as a basis for comparison. Both men and women have varying degrees of intensity and satisfaction from orgasm to orgasm. A vibrator in the sack is a sure sign of an unsatisfied lover.
Women know when men orgasm.
The back wall of the vagina is totally devoid of nerves, so there's very liffle chance she'll notice the orgasmic spasms until she sees you making funny faces. Along with reducing blood pressure, boosting immune function, killing cancer cells and microorganisms and controlling muscular activity, balance and coordination, NO has this remarkable relaxing effect on smooth muscle cells. Relaxation of the muscle cells surrounding an artery allows more blood to flow through. In both male and female, without NO, there is no sexual functioning.