KIN 155 Lecture Notes - Lecture 4: Homo Sapiens, Natural Disaster, Physical Strength
6 Feb 2017
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Document Summary
In prehistoric times, physical activity was critical to survival hunting, avoiding predators and competing with others for sexual partners. Natural selection slight genetic advantages led to the greater probability of reproducing and surviving. A population will always move to a better environment because nature poses a demand and stress on humans, and only the best can survive harsh weather/environment. Selective traits leading to homo sapiens development: Intelligence/brain greater memory recall, language development, predict environment, develop tools, greater control over fine movements. Founder effect when a small group reproduces and populates a new location, the genetic variation will be low. Population bottleneck after an environmental event (natural disaster), the less dominant will die and the survivors usually share a beneficial trait (immunity to disease) that allows them to survive and reproduce people similar to them etc. Physical activity was essential to survival because of activities like hunting, gathering, farming, warfare and general labor. Physical leisure activities began with the greeks olympiads.
