In this episode of Bulletproof Radio, we've selected the best questions that Bulletproof fans submitted voicemail, Facebook and the Bulletproof® Forums, for a great April Q&A. Hear Dave answer questions with recurring guest Dr. Mark Atkinson about hair and blood testing, lyme disease, heart rate variability, different kinds of coffee brews and more. This episode covers a variety of topics based on your questions. Thank you and enjoy the show!

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