Dude just do a water fast for 72 hours & if you can get through it. You will feel like a million bucks on that 4th morning. Just don’t eat a heavy carb diet on your next meal or you will deplete half of your fast.
but i've done juice cleanses, they always make me feel great afterwards. one week out of the moth. you can get juices at places like Raw Juice co., etc. or just google places around you for juice cleanses