The human life is so valuable, and I shall waste it simply by sleeping? Therefore the Gosvamis, our predecessor gurus, they have shown. They conquered over these things, Nidra, sleeping… Nidra is very dangerous according to Vedic civilization. It is simply waste of time. If one is not serious about the value of this human form of life, he may waste his time by sleeping. But no. If we follow our predecessors, our Gosvamis, who were all ministers… But they came to Vrndavana to practice. What? to conquer oversleeping, eating and mating. And coming to Vrndavana, if we indulge in that way, then what is the use of coming to Vrndavana? Go to hell and live there. So Vrndavana life is that. You have to practice. That is wanted.
(Srimad-Bhagavatam 7.6.6 — December 8, 1975, Vrndavana)