I’ve done 7 days twice. The first started with food poisoning after a dodgy kebab and not being able to keep anything down. I had only water and sparkling water

I’ve done 7 days twice. The first started with food poisoning after a dodgy kebab and not being able to keep anything down. I had only water and sparkling water. The first thing you realise is that you don’t just eat because you’re hungry. I discovered that eating was triggered by a few other things like boredom. I found it hard to distinguish between genuine hunger and the burning sensation I get and in the end I convinced myself I wasn’t really hungry. Drinking water also satiates. Some other interesting things happens. I had 5 days without a poo. I could still run but only for 3k before bonking. I was naturally more tired but otherwise stuck to my normal routine. I had periods of feeling ecstatic which were amazing. Resuming eating was a bit of a let down too - I was looking forward to things tasting out of this world but I got none of that. You lose a ton of weight and your immune system gets a bit a refresh too.