The Electric Gatorade Acid Test

ALEX HUTCHINSON is a Toronto journalist specializing in the science of running and other endurance sports. Prior to becoming a journalist, he worked as a physics researcher for the U.S. National Security Agency and ran for the Canadian team in track, cross-country and mountain running. His latest book, ENDURE: Mind, Body, and the Curiously Elastic Limits of Human Performance, was published in February. His own ultimate limits – he has determined through extensive research – kick in right around the half-marathon mark.