After all, we are under the full control of time. Kālena sarvatra gabhīra-raṁhasā. That is explained here. Kālena vā te balināṁ balīyasā. Very, very strong. There is no power . . . your so-called scientific power . . . you cannot struggle against the influence of time. So save time. Save time.
Another process is, save time, if you chant Hare Kṛṣṇa mantra then the time is not lost. Time is not lost. Hare Kṛṣṇa mantra, read book, Kṛṣṇa Book. Any moment, any time you spend for thinking of Kṛṣṇa, working for Kṛṣṇa, chanting for Kṛṣṇa, eating for Kṛṣṇa, dancing for Kṛṣṇa, that time is saved. That time is saved. Therefore it is recommended, harer nāma harer nāma harer nāmaiva kevalam, kalau nāsty eva nāsty eva . . . (CC Adi 17.21). Otherwise, by yoga practice, it is not . . . how many men can actually practice yoga? It is all farce. This is possible. Even a child can take part, Hare Kṛṣṇa mantra.