On The Gist, the incredibly cool Maria Konnikova of the New Yorker looks into the dearth of research into cryotherapy for a game we call "Is That Bulls--t?" Her new book, The Confidence Game, is now available for preorder. For the Spiel, we travel to the four corners of the world in search of happiness. Today's sponsors: Harry's, the shaving company that offers German-engineered blades, well-designed handles, and shipping right to your door. Visit Harrys.com for $5 off your first purchase with the promo code THEGIST. Berries. Fresh berries dipped in chocolate, starting at just $19.99 are a great last-minute gift and double your berries for just $10. Visit berries.com, click on the microphone, and use the code GIST. Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.

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