Best Answer: Only two VPs have resigned. John Calhoun in December 28, 1832 to run as a senator. On October 10, 1973, Agnew became the second Vice President to resign the office.
Foods Rich in L-Theanine. L-Theanine is an amino acid commonly found in green tea, which is believed to increase alpha waves in the brain, creating a feeling of relaxation, while maintaining mental alertness, Natural News wrote.
Animal-based foods like beef liver or fish contain the form of vitamin A known as retinol, while plant sources that have vitamin A contain the carotenoid compound beta-carotene, which the body converts to vitamin A. Orange-colored produce like sweet potatoes are a rich source of the beta-carotene form of vitamin A.ccording to the U.S. Food and Drug Administration's guidelines for labeling nutrient content in foods, sweet potatoes are considered an excellent source of vitamin A since they provide more than 20 percent of the RDA per serving.