https://blogs.mercola.com:443/sites/vitalvotes/archive/2016/07/15/why-your-eastward-jet-lag-is-worse-according-to-math.aspxRecently, CNN reported on a math model developed by a group of researchers at the University of Maryland which explains why it takes you days to establish a new sleep-wake cycle when you travel east, but you may barely feel anything when going west. TRAVELenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)