Please assess the completion status of the following clinical trial:

Trial Title: Random Assignment of Intervention Messages for Developing Personalized Decision Rules to Promote Physical Activity

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: NONE
- Phase: PHASE1
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Participants capable of reading, speaking and understanding English and of giving informed consent.~* Participants between the ages of 18-29 years.~* Participants must be free of visual impairment that would interfere with the use of a smartphone.~* Participants must own and carry an iPhone (running iOS version 10 or higher) or Android (running operating system 7 or higher) smartphone during waking hours.~Exclusion Criteria:~* Participants engaging in 90 or more minutes of moderate- or greater intensity PA each week.~* Participants engaged in organized programs with mandated physical activity (e.g., varsity sports, ROTC).~* Participants with contraindications to normal physical activity on the Physical Activity Readiness Questionnaire.~* Participants who require an assistive device for mobility or have any other condition that may limit or prevent participation in moderate-intensity physical activity.~* Participants who are pregnant or planning to become pregnant within the next 6 months.~* Participants with a prior diagnosis of cancer, cardiovascular disease, diabetes or metabolic syndrome.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 29 Years
- Healthy Volunteers: t

Study Arms:
- Random Messaging (Type: EXPERIMENTAL): Participants receive 0-5 messages/day from the Random AIM app. Messages are only delivered outside of a participant-specific Do Not Disturb window (e.g., 11pm-8am). Messages are selected randomly from three content domains: Move More (40%), Sit Less (40%), and Inspirational Quotes Unrelated to Movement (20%). Half of the messages are accompanied by images. Message selection and timing are determined randomly each night for the following day.

Based on this trial design, predict the completion outcome and termination type (if applicable).