Jason Freedman has some theories about why entrepreneurs can’t sleep. Maybe this explains #vampiremode. The four theories are:
Theory 1: It’s Genetic.
Theory 2: Insomnia makes ‘normal’ careers too difficult
Theory 3: Entrepreneurs create a self-perpetuating night owl culture
Theory 4: Entrepreneurs need to focus. Night is simply more productive.
For a more indebt hypothesize see Jason’s full post Why Entrepreneurs Can’t Sleep