Hi Mick,

I am on week 8 of Fast800 and its going pretty well!

As Cinque says, I count the sugar and milk in – I couldnt do any diet without a decent cup of tea.

Wrt to exercise, I can do my 10k steps on 800 cals. For anything more than this (examples: faster cardio work, heavy lifting), I add another 200 calories in but keep my daily net carbs under 50g. I really struggled with lifting heavy weights on 800 calories but didnt want to stop, hence the adjustments. I’ve had a couple of very motivated calorie burning days and have added 400 to my food for those but still stayed under 50g net carbs and its all been good. I think the key is to pick foods that support the diet, so bumping up portions rather than opting for a cheeky kit kat :).

Finally, I think logging everything has been hugely helpful for me and use MFP to log food, exercise, measuremens and weightloss. From this you will see very quickly the impact of all the decisions you make.

Good luck !