I once did a water fast for 5 days. No food et al, just water. So lightweight I felt on 2nd or 3rd day. On 4th day, though I had little energy, I stood up and walked around 2 miles to the nearby store. I was checking out food like I normally check out chicks. I never thought it would happen.

I ended my fast exactly at 120 hours with a burger, some coke, etc. Though, I read advice on the Internet by different people who fasted before that you should break your fast with some light food. I was like, fuck all, I am hungry, I want a burger and coke. It was the most delicious food I probably ever had. The correlation between hunger and taste became absolutely clear to me that day. Food is delicious only because of hunger.