This is my first time fasting. Day 2 was horrible; weak, blinding headache. Day 3 is better. Not too hungry, just a little weak, and the headache is not as bad. I did add 8 oz of pressed tomatoe juice this evening (not from concentrate, organic)I almost threw up when I went to drink my lemonade this evening, I'm so sick of it. Did I just mess up my whole fast? I'm hoping not, as I feel better, and I believe I can do tomorrow (a 12 hour day at work) without a problem.