Tai chi beats brisk walking for better sleep in stressed students

This study looked at whether doing tai chi for 24 weeks can improve sleep in college students with insomnia. 90 students were split into three groups: tai chi, brisk walking, or no exercise. The researchers measured sleep quality using a standard questionnaire and also checked levels of certain inflammatory markers in the blood. The goal was to see if tai chi helps sleep more than general aerobic exercise and whether changes in inflammation play a role.