@mussinboots - not hungry or malnourished, in fact properly better nourished than I was before I quit all the shit food!
I started with alternate day fasting years ago as I'd read it was good for asthmatics. I found 5:2 not great as I would tend to overeat on the 5 days so looked into 16 hour fasts. Turns out I regularly did this anyway as I never ate until after midday (finishing at 8pm), so started to push it a little later.
So now every day I eat between 2pm and 8pm and I don't restrict calories at all, BUT I only eat fresh foods, protein and a shit ton of vegetables and healthy fats. I'll throw in a starchy vegetable like sweet or white potato once/twice a week but limit them as I find them very bloating. I'll sometimes round off a meal with a bowl of frozen berries with coconut cream.
Because I don't have sugar, I don't miss it at all and I really don't crave anything. Before I quit processed foods and sugar, I would look at a chocolate advert and immediately crave. Now I don't even notice them and I don't feel like I'm denying myself at all.
All this being said, I don't believe in restriction for the sake of it. If I'm out to dinner/drinks/holidays/Christmas, I don't deny myself anything and if I want to fall face first into a Cadbury's selection box, I'm going to do just that
But on a normal day to day basis, I love the stability it gives me emotionally and mentally.
You will find that the first day is the hardest. I was in NY for work a week or so ago and of course that came with plenty of eating and drinking - it took me until Monday just gone to cut everything out again, I'm back on day 3 of 18 hour fast and feel great again. No hunger at all.