Just like nowadays nobody is going. Formerly they are going to the Himalayan mountain, and there is very cold. And the tapasya... There is practice, method: in high scorching heat the saintly person or sages, they will ignite fire all round. Already there is high temperature, and still they will get fire all round and go on, meditation. This is tapasya. These are the items of tapasya. There is scorching heat and they will arrange that. There is pinching, chilly cold, less than hundred degree, and they will go under water and put the body up to this and meditate. These are the items of tapasya. Tapasya. So for God realization formerly people used to undergo such severe type of penances, and at the present moment we are so fallen, we cannot tolerate these four principles? Is it very difficult? We are imposing some tapasya, that "Don't indulge in these things. No illicit sex, no intoxication, no meat-eating, no gambling." These are the items of tapasya for advancing in Kṛṣṇa consciousness. So is it very difficult? It is not difficult. If one can practice, go within the water up to the neck in chilly pinching cold, is it more difficult to give up illicit sex and meat-eating and intoxication? We are not advising, "No sex." Illicit sex. So where is the difficulty? But the age is so fallen that even these primary tapasya we cannot execute. That is the difficulty.