I am 67 years old and am retired due to health issues. I have 3 children and 7 grandchildren and 2 great grandchildren. I am single and live with my daughter and her family
You eat your normal allowance of food five days a week. On two non-consecutive days, you cut back to 500 calories for women or 600 calories for men. I tried it for two weeks with no result one way or the other.
If you google it there are detailed, free explanations. On this site, there is more than one thread that details it out - a search should bring them up. It really helped me!