why do somalians, kenyans and ethiopians run for longer than everybody else??

Question: why do somalians, kenyans and ethiopians run for longer than everybody else??
- Keywords:
  endurance,
  race
Asked by bert123 to Alan, Damian, Emma, Liam, Luca on 18 Jun 2013.
- Alan Richardson answered on 18 Jun 2013:
  
  Great question. Lots of research has been done on this. Much of it is thought to be about the lifestyle they lead – running to school, diet and the role models they have. It could also be in part because they live at a very good altitude (2000m) to get excellent training adaptations.

Question: why do somalians, kenyans and ethiopians run for longer than everybody else??