Meatless Monday is simple: every time Monday rolls around, do without meat for the day. Introduced as a public health awareness campaign in 2003, the initiative was backed by the Johns Hopkins Bloomberg School of Public Health’s Center for a Livable Future and endorsed by 30 schools of public health. Concerned about lack of protein? No problem; there are many healthy alternatives. Consider eating foods such as quinoa, lentils, egg whites, almond butter, peanut butter, nuts, soy, red kidney beans, pinto beans, black beans, navy beans, and black-eyed peas.