Brahm muhurtam is literally mean "God's Hour", it is traditionally, the last phase or muhurta of the night and is recommended as an auspicious time in all practices of yoga and most apt for meditation, worship or any other religious practice. In Hinduism, Brahma muhurta (time of Brahma) is a period (muhurta) one and a half hours before sunrise or more precisely is 1Hr 36 Mins. i.e. 96 Minutes = 2 Muhūrta or 4 Ghaṭīkā,and lasting for 48 minutes.
Their is a expectation that their minds will be spiritually linked to these powerful vibrations. The desired result is to obtain communion with the Yogis and saints spiritually; that their minds will freely float and get merged in that peaceful and serene atmosphere; and that they will receive blessings and guidance. Aspirants who follow this meditation method are said to quickly evolve in their Sadhana or practice.