Barefoot running injuries (notably repetitive stress injuries) caused by heel striking in padded running shoes. The barefoot movement has prompted some manufacturers to introduce thin-soled and flexible shoes such as traditional moccasins and huaraches for minimalist running. Throughout most of human history, running was performed while barefoot or in thin-soled shoes such as moccasins. This practice continues today in Kenya and among the Tarahumara people of northern Mexico. Historians believe that the runners of Ancient Greece ran barefoot. According to legend, Pheidippides, the first marathoner, ran from Athens to Sparta in less than 36 hours. After the Battle of Marathon, it is
Plague of Athens which were fabricated in the same decade. Never again in antiquity was ivory used on such a large scale. A second ancient narrative suggesting hemorrhagic fever etiology is that of Titus Lucretius Carus. Writing in the 1st century B.C., Lucretius characterized the Athenian plague as having "bloody" or black discharges from bodily orifices. Lucretius cited and was an admirer of scientific predecessors in Greek Sicily Empedocles and Acron. While none of the original works of Acron, a physician, are extant, it is reported that he died ca. 430 B.C. after travel to Athens to combat the plague. Unfortunately DNA sequence-based