http://articles.mercola.com/sites/articles/archive/2001/09/26/shift-work-part-one.aspxPeople who are routinely up all night working the late shift may be harming their hearts. Investigators found that shift workers -- those working in an alternating work schedule including nights -- are more likely to develop a condition called prematureenCommunityServer 2008.5 SP1 (Build: 31106.3070)