5 Questions with A.J. Jacobs

5 Questions with A.J. Jacobs

From Reasonably Happy with Paul Ollinger by Paul Ollinger

June 10, 2026 · 32 min

About this episode

Paul Ollinger interviews A.J. Jacobs about his unique approach to self-experimentation and the pursuit of happiness.

✍️ Follow Paul Ollinger on Substack by clicking here ✍️ A.J. Jacobs is a journalist, bestselling author, self-described “human guinea pig,” and one of the most interesting people I know. He was a great choice to be my second guest on my 5 Questions series of Substack livestreams. Over the past two decades, A.J. has built a remarkable career by asking questions most of us would never think to ask—and then answering them by turning himself into the experiment. He’s read the entire Encyclopedia Britannica, lived according to the Bible as literally as possible, pursued bodily perfection, traced his family tree to millions of relatives, thanked every person involved in making his morning cup of coffee, explored the world of puzzles, and most recently spent a year trying to live according to the original meaning of the U.S. Constitution. The result has been a string of New York Times bestsellers, including The Know-It-All , The Year of Living Biblically , Drop Dead Healthy , Thanks a Thousand , The Puzzler , and The Year of Living Constitutionally . Along the way, he’s become one of America’s most entertaining guides to the intersection of happiness, curiosity, gratitude…

People in this episode

Host: Paul Ollinger

Guest: A.J. Jacobs

Topics covered

  • journalism
  • self-experimentation
  • happiness
  • curiosity
  • gratitude
  • self-improvement

Keywords

  • A.J. Jacobs
  • self-experimentation
  • happiness
  • journalism
  • bestselling author

Mentioned in this episode

Books & works: The Know-It-All, The Year of Living Biblically, Drop Dead Healthy, Thanks a Thousand, The Puzzler, The Year of Living Constitutionally

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