The goal of this clinical trial is to test the effectiveness of the LifelongU intervention in habit, automatic affective evaluation and physical activity among university students. The main questions aim to answer are:

• What is the difference in habit, automatic affective evaluation and physical activity between the intervention and control groups?
• What is the difference in habit, automatic affective evaluation and physical activity between the before and after intervention?

Participants will attend 12 sessions of four modules that performed face-to-face physical education lessons. Lesson content included 10-min health-related fitness knowledge, 30-min fitness test and training, 50-min motor skill training with behavior change techniques (90 min per a lesson, once a week).

Researchers will compare control group to see if any effect difference.

A range of behavior change techniques derived from habit formation and self-regulation domain strategies will be used. These include behavioral rehearsal/practice, prompts/cues, and self-monitoring. The overall aim was to help students increase perceptions of physical competence and confidence, build positive affective attitude of physical activity, and develop autonomous association between physical activity and cues of time or events. Moreover, this intervention used student-centered learning strategies, game-centered approach in terms of mode of learning, and flexible in choice of timing, frequency, duration, and intensity of physical activity.

Inclusion Criteria:

• aged 18-25 years
• failure meeting the recommended physical activity guidelines (< 150 minutes MVPA or < 70 minutes VIPA in total a week) at the time of recruitment, screened via the Global Physical Activity Questionnaire

Exclusion Criteria:

• student athletes
• the presence of health conditions that prevented safe engagement in physical activity, screened via the PAR-Q+.