Sleep Patterns: Are You a Lark, Owl, or Hummingbird?
When it comes to sleep patterns, some people really are night owls or early birds. According to John Medina in the book, Brain Rules: 12 Principles for Surviving and Thriving at Work, Home, and School , 30 % of the population is an owl or a lark (an early bird in scientific literature.) The rest of us are called hummingbirds where some of us are more owlish and some are more larkish and some are in between.