Twenty years ago, definition of «premature ejaculation» had very clear parameters: everything that lasted less than two minutes automatically made you a man with sexual problems. A little later, attitude towards premature ejaculation changed somewhat – now it is understood as a condition in which ejaculation occurs either before onset of sexual intercourse, or immediately after its onset.
Alas, this is the «number one» problem for many men, and, as a rule, failures associated with premature ejaculation are then projected onto whole sphere of intimate life.