this approach can work really well with good short term results but medium term I now realise it is not for me.
I place a high priority on a decent resting metabolic rate and keeping a nice body temperature throughout the day and night.
The price I pay under the IF is the metabolic rate falls too much along with it a sense of body warmth - this is too high a price to pay.
Don’t let me put anyone else off trying, but a mainly fruit and veg smoothie as the fuel to start the day is simply proving too much of a consistent improvement to ignore.
happy for others to have different views etc