7 Aug 2026 (Navroze Bureau) : A new study suggests that adequate sleep may play a bigger role in adolescents’ academic performance than screen time or diet, highlighting the importance of healthy sleep habits during the school years.
Researchers found that students who consistently got enough sleep generally performed better academically, even after accounting for other lifestyle factors.
Sleep Linked to Better Grades
The study found a strong association between sufficient sleep and improved academic outcomes among adolescents.
Researchers said adequate sleep supports memory, concentration, learning ability and decision-making, all of which contribute to classroom performance.
More Influential Than Other Lifestyle Factors
While healthy eating and limiting screen time remain important, the study suggests that sleep duration and quality may have a greater impact on students’ grades.
Experts stressed that all three factors contribute to overall health, but sleep appeared to be the strongest predictor of academic success.
Why Sleep Matters
Teenagers require adequate sleep to support brain development, emotional well-being and cognitive function.
Poor sleep has been linked to reduced attention span, lower motivation and weaker academic performance.
Experts Recommend Healthy Sleep Habits
Researchers encouraged parents, schools and students to prioritise regular sleep schedules, minimise late-night distractions and create healthy bedtime routines to improve both learning and overall well-being.