When male sperms are outside the body, they does not live longer before they die. male sperms are of two kinds which is the strong and weak ones. the maximum time the stronger ones could live outside the body is three to five minutes.when this time is covered, the weak ones may be dead completely while the stronger ones which are not dead may be very weak rto function. it is of no use to leave the sperms outside for the said period before leaving it into the woman.