Host John McEnroe offers players the chance to win up to $250,000 by answering a series of seven questions. A player's heart rate is continuously monitored, and if it goes above a certain threshold ("redlining"), he starts losing money and cannot answer until it slows down again. As the game progresses, the stakes and redline penalties increase; also, McEnroe may set off a surprise or two to force the player's heart rate up.
