Whether they prefer scotch on the rocks or a double mocha latte, readers will
enjoy Braun's dissection of caffeine, alcohol and the processes by which they
work. For one thing, the presentation of complicated scientific concepts is
understandable without being condescending. Braun makes analogies ("Drinking
caffeine is thus like putting a block of wood under one of the brain's primary
brake pedals") that help the reader to visualize what's going on. The book is
also helped by the author's inclusion of stories and humorous moments.
From David Letterman quotes ("If it weren't for the caffeine, I'd have no
identifiable personality whatsoever") to personal anecdotes about the effects
these two mood-altering substances had upon the formulation of his book, Braun
manages to take abstract concepts and mold them into something highly readable.
Science novices should find this book as enjoyable and well-written as those
who have spent their lives working with biology or chemistry.

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