Participant will obtain a wristband with a built-in breathing practices program when assigned to the intervention group. Four kinds of breathing practices are included, which are bee breathing, diaphragmatic breathing, box breathing and 4-7-8 breathing. A specially prompted AI chat bot interviews the participant and designs a personalized daily breathing practice plan according to participant's preference and daily stress. Participant follows the plan in the following 28-day intervention period. Plan is adjusted weekly based on participant's feedback.

The investigators will explore the effectiveness of the AI-guided breathing practices on stress management using a self-developed stress questionnaire. The questionnaire consists of 15 items, each rated on a 5-point scale, with higher scores indicating greater perceived stress.

The investigators will explore the effectiveness of the AI-guided breathing practices on emotion using the positive and negative affect schedule(PANAS). The questionnaire consists of 20 items, each rated on a 5-point scale, with higher scores on the negative affect subscale indicating greater negative emotion, and higher scores on the positive affect subscale indicating greater positive emotion.

The investigators will explore the effectiveness of the AI-guided breathing practices on enhancing sleep quality using the insomnia severity index(ISI). The questionnaire consists of 7 items, each rated on a 5-point scale, with higher scores indicating worse sleep quality.