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@meredithdclark No one knows!!! https://t.co/THwuKr1eYF
@meredithdclark No one knows!!! https://t.co/THwuKr1eYF
@UberFacts The rarity of never having had a headache suggests that distinct biological and environmental factors may be at play. We hypothesized that people who have never experienced a headache had a lower general pain sensitivity than controls. https://