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If you need to cheat a polygraph or lie detector test, make sure to only respond to questions with "yes" or "no," so you don't reveal any details. When you're asked relevant questions, slow your breathing to 15 to 30 breaths each minute, without breathing too deeply, and answer them firmly, seriously, and without hesitation. Keep in mind that the interviewer will also ask you control questions, which aren't relevant but will help the polygraph measure your physical response when telling the truth. During control questions, vary your breathing rate by speeding it up, slowing it down, or holding your breath for a few seconds. As a result, the lie detector won't be able to tell which questions you're genuinely reacting to, since you'll be reacting to all of them. For more tips, like how to recognize the different question types you'll be asked during a polygraph test, keep reading.