The proper spelling of the phrase "brake one fast" is "break one's fast." The word "break" is pronounced /breɪk/, with a long "a" sound and a hard "k" at the end. The phrase refers to the act of eating one's first meal of the day, typically after a period of abstaining from food overnight, also known as breakfast. It is important to use correct spelling and pronunciation in written and spoken communication to effectively convey one's message.