Definition - What does Brahma Muhurta mean?
Brahma muhurta is the time before sunrise when it is believed to be most beneficial to practice yoga, to meditate or to worship. Muhurta is a Sanskrit term for a period of time equivalent to 48 minutes. Brahma means “sacred” or “holy” and is also the name of the creator god. Brahma muhurta, therefore, means “time of Brahma,” “sacred time” or “creator's hour.”
Prana, or the vital life force energy, is thought to be high during Brahma muhurta, and this peaceful time when the mind is still, ideal for meditation and prayer.
Yogapedia explains Brahma Muhurta
To be more precise, Brahma muhurta begins 96 minutes, or two muhurtas, before sunrise and ends 48 minutes (one muhurta) before the sun rises. The exact time of Brahma muhurta can vary by tradition, though, with some describing it as the last three hours of nighttime.
In Ayurveda, the ancient Indian holistic healing system, Brahma muhurta is the time that vata dosha (one of the body's bio-elements) is dominant. Vata is the dosha associated with movement, making Brahma muhurta the best time to arise.