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.
keywords:frequency keywords:forbidden_words startend:quotation change_case:english_lowercase detectable_format:number_highlighted_sections length_constraints:number_words length_constraints:number_paragraphs
less than
relationships
health
at least
Mention the word "relationships" for less than 2 times The words health cannot be in the response Your answer need to be wrapped in double quotes All letters in your response must be lower case letters Make sure to highlight at least 2 sections in your answer with markdown, i.e. use *highlighted section* Keep your entire response at least 13 words or less. Please reply in details, and include exactly 3 paragraphs. Separate the paragraphs with ***