eá¹£u puruá¹£ÄṇÄm ayuta-puruá¹£Äyur-vará¹£ÄṇÄá¹ deva-kalpÄnÄá¹ nÄgÄyuta-prÄṇÄnÄá¹ vajra-saá¹hanana-bala-vayo-moda-pramudita-mahÄ-saurata-mithuna-vyavÄyÄpavarga-vará¹£a-dhá¹›taika-garbha-kalatrÄṇÄá¹ tatra tu tretÄ-yuga-samaḥ kÄlo vartate
eá¹£u - in these (eight) vará¹£as, or tracts of land; puruá¹£ÄṇÄm - of all the men; ayuta - ten thousand; puruá¹£a - by the measure of men; Äyuḥ-vará¹£ÄṇÄm - of those whose years of life; deva-kalpÄnÄm - who are like the demigods; nÄga-ayuta-prÄṇÄnÄm - having the strength of ten thousand elephants; vajra-saá¹hanana - by bodies as solid as thunderbolts; bala - by bodily strength; vayaḥ - by youth; moda - by abundant sense enjoyment; pramudita - being excited; mahÄ-saurata - a great deal of sexual; mithuna - combinations of man and woman; vyavÄya-apavarga - at the end of their period of sexual enjoyment; vará¹£a - in the last year; dhá¹›ta-eka-garbha - who conceive one child; kalatrÄṇÄm - of those who have wives; tatra - there; tu - but; tretÄ-yuga-samaḥ - exactly like the TretÄ-yuga (when there is no tribulation); kÄlaḥ - time; vartate - exists.
There are four yugas: Satya-yuga, TretÄ-yuga, DvÄpara-yuga and Kali-yuga. During the first yuga, Satya-yuga, people were very pious. Everyone practiced the mystic yoga system for spiritual understanding and realization of God. Because everyone was always absorbed in samÄdhi, no one was interested in material sense enjoyment. During TretÄ-yuga, people enjoyed sense pleasure without tribulations. Material miseries began in DvÄpara-yuga, but they were not very stringent. Stringent material miseries really began from the advent of Kali-yuga.
Another point in this verse is that in all eight of these heavenly vará¹£as, although men and women enjoy sex pleasure, there is no pregnancy. Pregnancy takes place only in lower-grade life. For example, animals like dogs and hogs become pregnant twice a year, and each time they beget at least half a dozen offspring. Even lower species of life such as snakes give birth to hundreds of young at one time. This verse informs us that in grades of life higher than ours, pregnancy occurs once in a lifetime. People still have sex life, but there is no pregnancy. In the spiritual world, people are not very attracted to sex life, due to their exalted devotional attitude. Practically speaking, there is no sex life in the spiritual world, but even if sometimes it does occur, there is no pregnancy at all. On the planet earth, however, human beings do become pregnant, although the tendency is to avoid having children. In this sinful Age of Kali, people have even taken to the process of killing the child in the womb. This is the most degraded practice; it can only perpetuate the miserable material conditions of those who perform it.