Meditation is also a form of qi gong exercise. It must be taken seriously and not for fun! If meditation is done correctly and regularly without any brute force for a long duration, in the case of men, their sperms (i.e., jing) will be thickened and congealed. It is important to treasure and preserve this jing and not frittered away.
Whenever there is mental or emotional excitement, the jing will inevitably be affected.
They should understand that, when their jing has reached the period of saturation, it may easily overflow, resulting in an inevitable emission; but they need not be particularly concerned about this, for they can prevent the emission and diffusion against further loss.
Finally, it is by the alchemical process of transmutation of jing that the Elixir Pill is attained.