I suppose it also depends if you are like me and do walks at set times morning and afternoon every single day it is good for me to fast like this, because it is my routine, and most of my life is pretty routine etc. For example...my husband always brings me a coffee in bed at 7am, and then brings me breakfast in bed at 7.15 am-day in day out......I know routine!!!! But also what a fantastic husband!!!!! So if I go without my breakfast then I just walk the dogs at their normal time, normal walk etc, because this is what I always do.....so if I didn't do my testing this way, I would be permanently having to do TBR's for every dog walk twice a day every day etc....the way I do it, just allows me to set my basals for the way I live, because it is so routine.
Ken, I believe that fasting whilst on a pump is slightly different to that of fasting for blood tests, and MDI, because we have to make sure we haven't had correction bolus's or any hypo's prior to doing any testing, and we have periods of fasting that hospitals like to see. Just that I believe it is slightly different to what non pumpers would believe as fasting....again, I will stand to be corrected on that though!!!
There is good details in John Walsh's book on fasting, but I can't remember all the details off hand...well worth reading though....