PSYC 307 Chapter Notes -Coronary Artery Disease, Laetoli, French Cuisine
Document Summary
Laetoli prints show early humans struck with heel first ten push from toes like modern humans. Bipedal advantages: hands free to carry food and make tools, cooled body by reducing amount of direct sunlight striking body, expose upper body to wind, improved long-distance travelling efficiency. Differences of laetoli prints and modern human prints: laetoli wider front part of foot with big toe more separated from second toe and more pronounced arch. Habitually wearing shoes tend to have narrower feet, first two toes closer together, and have lower arch. Modern ppl who don"t wear shoes have similar shaped feet to laetoli. Ppl always ran without much protective covering on feet. Barefooted runners tend to land on fore-feet or mid-feet compared to runners with shoes who land on rear-feet. Cultural experiences shape ways we think and affect our bodies and health. Humans evolve in response to selection pressures from environment. 100,000-200,000 years ago and lived in africa until approx.
