by Dr. Michael Mosley (2018) True to the scientific method, Michael moves where the evidence takes him with this book and updates his 5:2 Fast Diet book of 2014 . The thing is, I have been enjoying the results from the 2014 version, having relatively easily lost a reasonable amount of weight (5kg and down to my target BMI of 19) following its prescriptions, so I was worrying that the update involving a significant revision would leave me confused and in a bit of dilemma as to what to do next. As it happens, it simply opened up the options, which turned out to be useful since a friend has recently challenged me to actually do that 5k parkrun that I have long talked about but have not actually trained for in any shape or form, having been focusing more on HIIT and walking the dogs and certainly not doing the paced jogging that my version of a park run would entail. When I did start to try to do longer runs on fast days of only 400 cals (sadly that is a qua...