I found my experience to be the opposite. I had clear mental focus, but felt physically drained of energy the entire time. I did a 3.5 day water fast, with the

I found my experience to be the opposite. I had clear mental focus, but felt physically drained of energy the entire time. I did a 3.5 day water fast, with the majority of my fluids from water/tea with salt for electrolytes. My sleep was pretty terrible up until the last night, when I got a solid 8 hours without waking up once. I usually wake up 8-10 times a night, so this was a huge breakthrough. I also regained my energy on that last half day and felt incredible. What type of fasting did you do, and what liquids did you drink?