Is anyone basing their fast day meal on 25% of the TDEE? I have worked out that my TDEE is approximately 1665cals. This equates to approximately 413cals on fast days instead of the general recommended 500.
I’m interested to find out if anyone else is taking this approach? Thanks.

I did my first official day yesterday which was a breeze. 500 cals was a lot in one sitting so the reduction I’m hoping, won’t be too big a deal. If I have days where I do feel more hungry (and I’m sure they’ll come) I will amend the intake between 413 and 500. I will be starting on 4:3 but again I’m guessing in the winter months coupled with the lost taste for salad will possibly mean tweaking 4:3 to 5:2. I’m open to any suggesting from more experienced fast dieters!

Me too Cathyork – I have a slipped disc and asthma which weren’t once too much of a problem but as I get older (I’m not that old) I feel both cause more problems. My TDEE is around 1665 however I have tried to stick to that today (non fast day)and found that there were too many cals to fit in before I had to stop eating for the day, as it’s a fast day tomorrow. I’ve eaten v well today and roughly only taken in 1244 cals. I even ate a dessert (which I never eat) which was grilled figs topped with 1/2 tsp honey then two dollops of v low fat nat yoghurt and a small handful of toasted almonds…delicious. I tried to eat whatever I wanted today but found I really didn’t fancy the treats I normally would for example we have a treat box full of minstrels, peanut M&M’s, twirl bites, …etc and even whilst I filled it up, I didn’t even pinch one (unheard of!)