Going to bed late is associated with a higher IQ. Researchers at the London School of Economics analyzed thousands of individuals to map the relationship between circadian rhythms and cognitive ability. People with higher IQs are significantly more likely to be night owls. The data breaks it down by sleep schedules: • Very Dull (IQ < 75): Sleep by 11:41 PM • Normal (IQ 90–110): Sleep by 12:10 AM • Very Bright (IQ > 125): Sleep by 1:44 AM (and sleep in past 11:00 AM on weekends) Why? Evolutionary psychology. For 99% of human history, night was for sleeping. Artificial light didn't exist. Staying up late chasing complex thoughts, building projects, or solving problems is an "evolutionarily novel preference." People with higher general intelligence are more equipped to override ancestral instincts, break away from the traditional sun-up-sun-down routine, and adapt to a modern, 24/7 world. The early bird might get the worm. But the night owl gets the higher IQ score.