The U.S. Army is asking for volunteers to eat Meal, Ready-to-Eat (MRE) military rations for 21 days straight.
Volunteers must be 18 to 62 years old, not be trying to lose weight, and be willing to give blood and waste samples.
The study is being conducted by the U.S. Army Institute of Environmental Medicine in Natick, Massachusetts, to determine the effects of eating military rations, on gut health.
Volunteers cannot have a history of gastrointestinal problems, and must meet additional screening criteria.
Participants will need to travel to the lab in Massachusetts four different times for three hours at a time.
Additional info is found on the U.S. Army website.