After the disaster that was juicing on Monday, I didn’t know what to expect from my first proper fasting day on the 5:2 Diet today.

Depending on what book or website you read, I should either be limiting myself to 600 calories on a fasting day, or 25% of my normal daily calorie allowance. For a normal sized bloke, I imagine they’d be roughly the same number, but being 6’2” and pushing 20 stone my normal daily calorie allowance is somewhere in the 3000-3500 range, again depending on where you l...