Meal more filling than snacks. The type of meal served or eaten at any given time varies by custom and location. In most modern cultures, three main meals are eaten: in the morning, early afternoon, and evening. Further, the names of meals are often interchangeable by custom as well. Some serve dinner as the main meal at midday, with supper as the late afternoon/early evening meal; while others may call their midday meal lunch and their early evening meal supper. Except for "breakfast", these names can vary from region to region or even from family to family. A study in 2016
Meal, Ready-to-Eat additional drink mixes to encourage additional hydration. The caloric and fat content of the meals is also increased.<ref name="MCW/LRP">Meal, Cold Weather/Long Range Patrol factsheet by the Defense Logistics Agency</ref> The MCW replaced the "Ration, Cold Weather" (RCW). The "Meal, Alternative Regionally Customized" (MARC), is a self-contained, shelf stable meal developed by U.S. Army Soldier and Biological Chemical Command (SBCCOM)/Natick, Individual Combat Ration Team (ICRT), Combat Feeding Directorate (CFD). MARCs were developed specifically for detainees at Guantanamo Bay, and have since found wider spread use, notably Iraq and Afghanistan. MARC meals are entirely vegetarian as an easy way to prevent conflicts