The word lust means sexual desire (this meaning is sometimes metaphorically extended to other forms of desire, e.g. lust for power). It is considered a vice by many religions.
Some moralists consider lust to be a corruption of temperance, in the sense that when temperance fails, lust is the natural result. In Christiantheology, it is considered one of the seven deadly sins.
In the first state the rate of sexual activity corresponds to the level of libido, in the second case it is higher, and in the third it is lower.
As a result of this man's high rate of sexual activity, the cyto-genetic mechanism of pre-zygotic determination produces an elevated level of testosterone, and the pool of Y-carrying spermatozoids have a selective advantage, which is realized in the process of pre-zygotic selection, leading to the conception of a male child.
It is possible that in these cases, the limited level of sexualdesire is inherited, as are the specific personal factors which lead to "frequent" sexual activity.