The lymphatic system will back up if you eat foods that don’t agree with you. The whole-body bloat that comes from eating foods with too many chemicals or foods that you react to is lymphatic congestion. The standard American diet tends to do this to people. Anyone who has dieted knows that when you start eating really healthy with lots of fresh vegetables and no junk, you lose at least 3 to 4 pounds of water. This is backed up fluid from your lymphatic system.
If you plan to go Perpetual Traveler, you need to learn to monitor and fix your diet on the run. http://iperpetualtraveler.com