Regulating, how can you regulate the senses? Not by artificial means. The yoga practice, of course, is meant for controlling the senses but nobody can practice in this age perfectly yoga, neither one can control the senses. But this is practically. Just like our sense, tongue. We want to taste very palatable dishes. Now you supply palatable Kṛṣṇa prasādam. You forget going to hotel immediately. This sort of process is in Kṛṣṇa consciousness. We don't simply prohibit that "You don't do this," but we supply something which is engaged by the senses and the mind, the intelligence, so that you do not require to be engaged otherwise.
Positive and negative. Simply negative is no good unless there is positive engagement. So there is no question of negative. Negative is already there. If you taking nice foodstuff, automatically you give up obnoxious and nonsense foodstuff. But if I say, "Don't take this foodstuff. This is not good," and if I don't supply you nice foodstuff, naturally you are hungry; you will have to take whatever is there.
Just like sometimes you have seen the dogs? They are eating stool, their own stool. So I was talking this. One of my students told me that in the last war in the concentrated camp, the human being, they also ate their stool out of hunger. You see? There was no food, so they ate their own stool. So when there is no opportunity of good occupation, one must be satisfied with nonsense occupation. So this Kṛṣṇa consciousness is so nice that one who is occupied with this movement, he cannot go any more to so-called lusty and other nonsense occupation.