Because TSA air marshals have access to sensitive information related to national security, such as airplane protection procedures and no-fly lists, applicants are required to obtain a security clearance. The security clearance process determines whether you can be entrusted with national security information.
Insoluble fiber adds bulk to your stool and speeds bowel movements, which can lead to more frequent bowel movements. Additionally, both types of dietary fiber stimulate bacteria in your colon and may cause an increased frequency of bowel movements, as well as gas, bloating and abdominal discomfort.
Hippocrates thought bowel movements should ideally be two or three times a day, which is what you see in populations on traditional plant-based diets, on the kind of fiber intakes you see in our fellow great apes, and what may be more representative of the type of diets we evolved eating.