Four years ago, I was scheduled to go to the Wigmore Institute in Puerto Rico for a two-week raw foods/cleanse regimen. Frankly, I wasn't sure I could handle it -- so I decided to do a 10-day "trial run" on Purium. I gave up coffee, wine, meat, dairy, and carbs, and was miserable and weak but I lost 10 pounds, spent a few days carefully eating somewhat normally, and successfully completed the Wigmore program (although that was even more miserable).This time, I just got disgusted at my weight and decided to treat myself to a 10-day jump start, again using Purium. This time I'm THRILLED with it. Their Flex foods program seems to have become considerably more flexible, with more items allowed. (Three Flex foods/beverages are allowed per day, whereas IIRC only one was allowed last time.) Also, I decided to keep my coffee on my program, diluted half-and-half with unsweetened almond milk, and called it a Flex Beverage.I found myself being slightly hungry early- to mid-afternoon, so I would mix a cup of frozen blueberries into the Vitamix for the early afternoon Power Shake and call it Flex #2. That helped -- furthermore, it's Really Good that way and takes nearly an hour to finish!Sometimes, at night, I would be too satisfied to even desire the Cherry or Fiber Mix -- but I didn't sleep well without the Cherry juice. Also, I didn't have indigestion One.Single.Time during the 10 days. That has been a tremendous relief!The Super Lytes seemed to contain a ton of sodium, and I actually had a lot of the Ionic Elements ("supercharged fulvic acid; ocean and plant-derived minerals; purified water") left from the previous round, so I used that instead of the Lytes. (Four years ago, the Ionic Elements were taken along with the Aminos, so I figured the product would work just as well as it did last time, and it did.)The upshot is that I still have a lot of the Power Shake mix left -- most of the fiber -- still some Ionic Elements -- and a little bit of the cherry juice. I've ordered another bottle of amino acid tablets. I have felt so good and so energetic this time around that I'm gonna keep going on the 40-day weight loss -- with more flexibility still in terms of Flex foods and beverages. The instructions call for 1-2 Power Shakes per day with 1-2 Flex Meals AND snacks. So my unsweetened almond milk, blueberries mixed into the Shake, juices from cucumbers (unlimited) and the fennel fronds left from the braised fennel bulbs I make -- all of those can be snacks now rather than true Flex items.I'm very satisfied and would recommend this heartily to anyone needing a jump start or a quick 10-pound weight loss. Just listen to your body.Oh, one more thing. In the past, I've scoffed at the notion of a food diary. This time, because I didn't have notes from the last time and the Purium instructions are a little unclear, I decided to keep a detailed record each day of times of consumption of the Power Shakes, Super Aminos, Flex foods, etc. , my weight each morning, and notes about things. I'm going to continue that practice.One more thing (lol) and then I'll shut up. DO have lots of spring water on hand. I went through nearly a gallon a day. One day I ran out of spring water and was too lazy to go to the store -- so for the rest of that day, and all of the next, I relied on tap water. The two mornings after, my weight didn't move. It's great to have COLD water from the fridge -- the products seemed to perk me up more by being cold as well.