Carolyn Hansen: Fasting tried and true solution for most health issues 19 Feb, 2021 04:00 PM 6 minutes to read Fasting is personal. Some people experience success with 20 to 24-hour fasts while others prefer shorter four, six or eight hour eating windows. Photo / Getty Images Fasting is personal. Some people experience success with 20 to 24-hour fasts while others prefer shorter four, six or eight hour eating windows. Photo / Getty Images Carolyn Hansen is co-owner of Anytime Fitness. If you struggle with weight-loss and you've tried, without success to break through that tough, mysterious weight-loss plateau you've come up against, it's time to adopt and benefit from the power of fasting.