Please list the various phases in Intermittent Fasting ordered by when they occur after starting the fast, and provide a description of what happens in the body during each phase in about 150 words for each.
length_constraints:number_words startend:quotation change_case:english_lowercase length_constraints:number_paragraphs detectable_format:number_highlighted_sections keywords:forbidden_words keywords:frequency
at least
health
less than
relationships
Keep your entire response at least 13 words or less. Your answer need to be wrapped in double quotes All letters in your response must be lower case letters Please reply in details, and include exactly 3 paragraphs. Separate the paragraphs with *** Make sure to highlight at least 2 sections in your answer with markdown, i.e. use *highlighted section* The words health cannot be in the response Mention the word "relationships" for less than 2 times