What This Means
This research suggests that two popular forms of exercise — brisk walking and Tai Chi — can meaningfully improve sleep quality in college students who struggle with insomnia. The study followed 75 university students in China over six months, with students either practicing one of the two exercises for one hour, three times per week, or continuing their normal routine without any exercise intervention. Sleep quality was measured using a standardized questionnaire called the Pittsburgh Sleep Quality Index (PSQI), where higher scores indicate worse sleep.
After 24 weeks, both exercise groups showed significant drops in their PSQI scores, moving from levels indicating sleep disturbance toward more normal sleep. The control group, which did not exercise, did not show the same improvements. Both Tai Chi and brisk walking led to better sleep duration, sleep efficiency, and less daytime impairment. Brisk walking additionally improved subjective sleep quality ratings. Importantly, the two exercise types produced very similar overall benefits, suggesting that the type of exercise may matter less than simply engaging in regular physical activity.
This research suggests that structured, moderate-intensity exercise programs — whether mind-body practices like Tai Chi or straightforward aerobic exercise like brisk walking — could serve as practical, drug-free options for addressing sleep problems in young adults. Given that insomnia is common among university students and can negatively affect academic performance and well-being, these findings highlight accessible, low-cost strategies that students and institutions might consider. The study was limited to a single university population of young adults, so results may not generalize to other age groups or settings.