College student volunteers were recruited from a university in Anhui Province, China, and screened by the Pittsburgh sleep quality index (PSQI) scale, and those with PSQI scores higher than 7 were considered to have clinical insomnia, and insomniac college students screened were subjected to a 24-week 24-form taijiquan intervention, and the rest of the insomniac volunteers were randomly divided into the fast-walking group and the control group. As the most common form of physical exercise for college students and the easiest aerobic exercise, brisk walking was chosen as an intervention for insomniac college students to better compare the efficacy of tai chi with that of general aerobic exercise for insomnia. The taijiquan group performed taijiquan exercise three times a week for 60 minutes each time, the brisk walking group performed brisk walking training three times a week for 60 minutes each time, and the control group did not carry out any intervention and maintained a normal life and study status. Before the intervention, questionnaires were filled out and fasting elbow venous blood was drawn, and the staff uniformly explained the intervention-related contents and precautions, and after 24 weeks of intervention, the post-test questionnaires and fasting venous blood were filled out centrally.

Insomnia: measured by PSQI scale. The scale was developed by Buysse et al, a neurologist at the University of Pittsburgh, USA, and has an overall internal consistency Cronbach's ɑ coefficient of 0.83.The scale was used to assess the quality of sleep of an individual in the last month, and consists of 19 self-assessed and 5 other-assessed entries, for a total of 24 items, where the 19th entry and the five other-assessed entries do not participate in the scoring. The 18 scoring items include seven dimensions: subjective sleep quality, time to sleep, sleep efficiency, sleep disorders, hypnotic drug use, and daytime functioning. Each dimension is scored on a scale of 0-3, and the cumulative score is the total PSQI score, which ranges from 0-21, with higher scores indicating poorer sleep quality, and PSQI scores greater than 7 are considered clinical insomnia.

Physical activity: was measured using the Physical activity rating scale-3 (PARS-3). The scale has a revised by Liang Deqing et al. with a retest reliability of 0.82. The scale determines the amount of exercise in terms of intensity, time, and frequency of participation in physical activities. Exercise volume = exercise intensity × time × frequency, intensity and frequency are scored on a scale of 1 to 5, assigning 1 to 5 points respectively, and time is scored on a scale of 1 to 5, assigning 0 to 4 points respectively. The score range of the scale was 0-100 points, and the score of ≤19 points was low exercise, 20-42 points was medium exercise, and ≥43 points was high exercise.

Inclusion Criteria:

• Meet the diagnostic criteria of insomnia i.e. PSQI score ≥ 7;

  • Age between 18 and 25 years old; ③ Exercise of the study subjects is low exercise i.e. PARS-3 score ≤ 19;

    • Have not received any psychological and pharmacological treatments in the past one year;

      • Have no visceral diseases, normal vision and hearing; ⑥ Have good physical fitness and can perform basic intensity of physical exercise; ⑦ Have signed the informed consent form.

Exclusion Criteria:

• Recent cardiovascular disease, musculoskeletal disease and other diseases that affect normal sports training;

  • Serious mental illness; ③ Antibiotics within the past three months; ④ Serious autoimmune disease; ⑤ Those who refuse to participate in the research project.