I generally find myself sharper, more alert and with much more energy. This continues the longer your fast lasts, up until day 7ish in my case.
Your noradrenaline levels spike when fasting, and it can make it hard to sleep - too juiced haha.
If you're finding yourself tired, it could be a lack of electrolytes. Try a teaspoon of salt in a pint of water. I tend to drink coffee when water fasting, which has an outsize effect.
Same. It makes sense to me intuitively: when you're hungry, you go into an alert "hunting mode". My sense of smell is normally very weak, but when I am hungry it increases by a factor of 100.
Your noradrenaline levels spike when fasting, and it can make it hard to sleep - too juiced haha.
If you're finding yourself tired, it could be a lack of electrolytes. Try a teaspoon of salt in a pint of water. I tend to drink coffee when water fasting, which has an outsize effect.