Why do so many “cleanse” programs suggest drinking hot lemon water in the morning? Warm beverages encourage movement in the digestive tract. Sour flavors, similar to bitter flavors, stimulate digestive juices to flow. A hot drink in the morning can help promote regular bowel movements. The bowels are one of the body’s main “detox” pathways. Clear, unsweetened fluids do not move the body from its “fasting” state to its “fed” state. This allows an extended period of time for regeneration and repair. For those who don’t digest fruit well, try these alternatives. Rice or white vinegar can be used instead of lemon. Also, you might try adding a number of.