“Public speaking professionals say that you win or lose the battle to hold your audience in the first 30 seconds of a given presentation.” FirstsWinningGivenLosesAudienceBattleSecondsPresentationPublic SpeakingWin Or Lose Book:Brain Rules (Updated and Expanded): 12 Principles for Surviving and Thriving at Work, Home, and School Source: Brain Rules (Updated and Expanded): 12 Principles for Surviving and Thriving at Work, Home, and School