retain

 
An important word in this verse is urdhva-retasah, which means brahmacaris who have never discharged semina. Celibacy is so important that even though one does not undergo any austerities, penances or ritualistic ceremonies prescribed in the Vedas, if one simply keeps himself a pure brahmacari, not discharging his semina, the result is that after death he goes to the Satyaloka. Generally, sex life is the cause of all miseries in the material world. In the Vedic civilization sex life is restricted in various ways. Out of the whole population of the social structure, only the grhasthas are allowed restricted sex life. All others refrain from sex. The people of this age especially do not know the value of not discharging semina. As such, they are variously entangled with material qualities and suffer an existence of struggle only. The word urdhva-retasah especially indicates the Mayavadi sannyasis, who undergo strict principles of austerity. But in the Bhagavad-gita the Lord says that even if one goes up to Brahmaloka, he again comes back. (Abrahma-bhuvanal lokah punar avartino 'rjuna. Bg. 8.16) Therefore, actual mukti or liberation can be attained only by devotional service, because by devotional service one can go above Brahmaloka, or to the spiritual world, wherefrom he never comes back. Mayavadi sannyasis are very proud of becoming liberated, but actual liberation is not possible unless one is in touch with the Supreme Lord in devotional service. It is said, harim vina na srtim taranti: without Krsna's mercy, no one can have liberation.    (More...)
The word urdhva-retasah in this verse is very significant. Ūrdhva-retah refers to one who can control sex life and who instead of wasting semina by discharging it, can use this most important substance accumulated in the body to enrich the brain. One who can completely control sex life is able to work wonderfully with his brain, especially in remembering. Thus students who simply hear Vedic instructions once from their teacher could remember them verbatim without needing to read books, which therefore did not exist in former times.    (More...)
All of them were unwilling to adopt materialistic activities because they were highly elevated due to their semen's flowing upwards.
In the beginning, Brahma created four great sages named Sanaka, Sananda, Sanatana and Sanat-kumara. All of them were unwilling to adopt materialistic activities because they were highly elevated due to their semina's flowing upwards.    (More...)
Discharging semen is the cause of death. Therefore, yogis and transcendentalists who want to live for greater spans of life voluntarily restrain themselves from discharging semen.
It is understood herewith that the faculty to discharge semina is the cause of death. Therefore, yogis and transcendentalists who want to live for greater spans of life voluntarily restrain themselves from discharging semina. The more one can restrain the discharge of semina, the more one can be aloof from the problem of death. There are many yogis living up to 300 or 700 years by this process, and in the Bhagavatam it is clearly stated that discharging semina is the cause of horrible death. The more one is addicted to sexual enjoyment the more susceptible he is to a quick death.    (More...)