"Among those are housing conditions, noise pollution, light pollution,
   air pollution, stress from different sources - including perceived
   racial discrimination - and jobs or working conditions," he said,
   adding that the convergence of all those factors may explain why
   getting the recommended amount of sleep "may be less common among Black
   adults than among White adults."
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   conditions or work schedules that don't support sleep - may emerge, at
   least in part, from historical and persistent forms of structural
   racism, which Jackson considers as the "totality of ways in which
   societies foster racial discrimination through mutually reinforcing
   systems of housing, education, employment, wages, benefits, credit,
   media, health care and criminal justice."
   PEMBROKE PARK, FLORIDA - JULY 22: Health care workers use a nasal swab