Self-heating meals are convenient food options that can be prepared without the need for an external heat source. These meals typically come in a sealed package that contains a chemical heating element. When activated, this element generates heat, warming the food inside the package in just a few minutes. These meals are popular for outdoor activities, emergency preparedness, and situations where cooking facilities are limited. They are often used by military personnel, campers, and hikers who need a quick and easy way to enjoy a hot meal on the go.