As Sadhguru has wittily said, too many of us disregard the ancient health and knowledge treasures of our own ancient cultures eg ayervedic prctices that have for thousands of years recommended fasting one day a week, / several days around the time of the full moon/at the changing of the seasons... and those prinicples, tested for their veracity hundreds of years, are only respected when western forms of science spend millions of dollars validating them!