I do not know about vinegar however i practice drinking 1 glass cold water with 1 spoon of olive oil and 1 quarter freshly pressed lemon juice just about first thing in the morning, (ok, maybe second lol). I recommend you try it for a few weeks and feel the difference.
Surviving without a morsel of food and water for more than 70 years sounds humanly impossible, but Prahlad Jani, an 82-year-old Indian, claims to have eaten not a single grain of rice or consumed a drop of water since the early years of World War II.