Beet roots are a great source of vitamin C and minerals like iron, calcium, sulfur and potassium along with beta-carotene, phytochemicals and antioxidants. The minerals present in beet roots act as the building blocks of blood corpuscles and boosts the functioning of the immune system. It also helps in increasing stamina and therefore is an ideal drink to consume before sweating it out in the gym in order to maximize the results of the workout. The best way to juice beet roots is to wash them properly, juice the roots, stems and leaves.