Sir John Hargrave, author of Mindhacking: How to Change Your Mind for Good in 21 Days, kicked off his 2016 by embarking on a 21 day fast. Using the very principles shared in his book, John shows how ordinary people can achieve amazing feats of willpower by hacking their minds.  We’re not sure whether to be worried or impressed, so we catch up with John for the second time to find out more about this experience that he described as life changing and transformative.

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