Fastest and easiest way to lose weight for most people, water fasting. Choose the best of the options for you, intermittent fasting, alternate day fasting, 3-5 days fasting. If you decide to go longer than that you can, just need to be cautious. My eating habits consist of intermittent fasting of 20 hours of fasting and 4 of feeding. I recently did a 5 day water only fast with optimal results.