Yesteray was Day 4 for me. I felt hungry a lot and ate a number of mini-meals throughout the day. Major, major cravings for cooked food, especially grains. I was fantasizing about rice and cereal and peanut butter sandwiches. No physical discomfort or abnormal mental states of note; it was just a regular day. Despite an intuitive feeling that I'm not eating enough calories (maybe because I'm hungry so often), my weight is within 1 pound of where it was when I started. I also checked out the nearest Costco and found only conventionally-grown produce, so disappointing.