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Why Do We Do That? Clips

  1. 'Having some form of decoration to the face and body is universal.'

    Duration: 01:07

  2. Is procrastination just poor time management?

    Duration: 13:34

  3. "It helps you select a potential mating partner"

    Duration: 02:29

  4. Why do teenagers take more risks?

    Duration: 02:36

  5. Why does heartbreak physically hurt?

    Duration: 03:24