Brief Behavioral Intervention to Maintain Sleep Regularity in Young Adults Over the Christmas Break

Exclusion Criteria

• •1. Have been in a different time zone within two weeks before the baseline assessment;
• •2. Diagnosed with circadian rhythm disorders such as delayed sleep-wake phase disorder (DSWD), advanced sleep-wake phase disorder (ASWD), irregular sleep-wake rhythm disorder (ISWRD), and non-24-hour sleep-wake rhythm disorder (N24WSD);
• •3. Diagnosed with sleep disorders that directly/indirectly interfere with sleep regularity (e.g., insomnia, sleep apnea);
• •4. Use of medications or treatment that may influence sleep regularity (e.g., hypnotics, antidepressants);
• •5. Diagnosed with serious physical or mental diseases such as cancer, end-stage liver or kidney diseases, schizophrenia, and psychosis.