By Priyanjana Pramanik, MSc. Reviewed by Susha Cheriyedath, M.Sc. Jul 2 2025 Think afternoon sunlight helps teens wind down at night? New research shows it can actually disrupt their melatonin and delay sleep, suggesting school schedules, not just screen time, may be the key to better rest. Study: Afternoon to early evening bright light exposure reduces later melatonin production in adolescents . Image Credit: StasyKID / Shutterstock In a recent article published in the journal npj Biological