The erection reflects condition of your both physical and also mental health. Insufficiency of erection arises because of various reasons, including illnesses, stress and problems in relations. Though the majority of men concern erection by a principle "all or anything"(erection is present or it isn't) actually they are mistaken. It is possible to make love with a partial erection. The man can have absolutely soft penis and, nevertheless, make love. Not taking into account hardness of a penis, man can experience all stages of excitation and finish with orgasm.
If you aren't capable to have an erection from time to time, for example, during alcohol intoxication, but in most cases all passes well, it is normal. Normally as well that erection level fluctuates during making love.