I think I lasted about 6 hours on the Master Cleanse. It was awful. Really awful. I started with the quart of water mixed with un-iodized sea salt. The taste was horrid and a straw did not help at all, but I got it down. Then it was on to the “lemonade”, which consisted of two tbsps. of fresh squeezed lemon juice and 100% pure maple syrup and a pinch of cayenne chili powder mixed in 8 ounces of pure water. It definitely wasn’t tasty, but again I could handle drinking it. The part that was unbearable is that I progressively felt sicker the more I drank the lemonade. I felt nauseated, disoriented and just gross. I’m just finally feeling back to normal, although I still have a horrible headache. I’m not sure if I’m just a fluke and that most people feel awesome doing this cleanse, but I cannot recommend this to anyone. I did the cleanse thinking I would feel better (I’ve been feeling sluggish lately), but this just made me feel 100 times worse.