They're the imperatives(حتمی) for well-being(سالم بودن) that have been drilled into us forever(همیشه)--"Drink eight glasses of water a day!" "Eat nine servings of fruits and veggies)ماکول ،خوردنی)!" "Stay away (دور ماندن)from red meat!" But it turns out that(شریک در تالیف یک کتاب) taking care of yourself isn't quite so black-and-white, says Harvard Medical School psychologist(روانشناس) Alice Domar, PhD, coauthor( شریک در تالیف یک کتاب) of Live a Little! Breaking the Rules Won't Break Your Health. "Research(تحقیق) is revealing(نشان دادن) that whoever wrote the old guidelines(راهبردها) didn't have the whole picture, and that there are more paths(روش ها) to optimal(مطلوب) health than we previously thought," Domar says. Happily, the new rules are more user-friendly than the old ones.