New research from the University of Barcelona published in the journal Personality and Individual Differences found that early risers are more persistent, and resistant to fatigue, frustration and difficulties. This tends to be associated with lower anxiety and depression, higher life satisfaction, and a lower overall risk of substance abuse.
The Night Owl lifestyle also has a greater downside. “Night owls tend to be more depressed, have a higher dependence on caffeine, and use alcohol more,” Sharkey says. Other studies show that night owls eat more and eat poorly. Spanish researchers found that late risers displayed more extravagant, temperamental, and novelty-seeking characteristics, and suffered from higher rates of insomnia, ADHD, and even addictive behaviors.
Even worse are the negative effects on those non-Night Owls forced into overnight shift work. The hazards of which are well documented, and include “restlessness, sleepiness on the job, fatigue, decreased attention and disruption of the body’s metabolic process,” according to the American Psychological Association.