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Maybe, but how biased is the population? People in the army do a lot more physical exercise than most, people in jail have a different way of living than the re
by coaxial 8y ago
Maybe, but how biased is the population? People in the army do a lot more physical exercise than most, people in jail have a different way of living than the rest of the population because of their circumstances.
- cimmanom 8y agoIsn't that what control groups are for? Then you could rule out exercise or jail conditions as a factor.