SPIRIT Club Chronic Brain Injury Exercise Platform

Inclusion Criteria: * Age 18 years or older with chronic brain injury (CBI) * At least 9 months post-injury * Is able to able to be able to demonstrate the ability to meet at least one of the following functional mobility scenarios: 1) able to walk with or without an assistive device or with no more than contact guard assist from a caregiver for steadiness checks and proprioceptive support, 2) able to stand up from a chair with no assistance or no more than contact guard assist from a caregiver for steadiness and proprioceptive support, and/or 3) able to maintain steady seated balance in a chair or wheelchair and able to lift at least one limb with minimal assist (\<25%) from a caregiver against gravity * Currently exercising less than 60 minutes per week * Able to follow simple commands * Participant is his/her own legal authorized representative (LAR) or LAR is able to verify they can follow simple commands and participate in study and support consenting and participation processes * Provides confirmation of medical clearance from physician to participate in moderate levels of activity without supervision from a licensed healthcare provider Exclusion Criteria: * Unsafe independent functional mobility observed during the functional mobility screen and no available caregiver/carepartner to facilitate participation in the study and provide assistance while using the SPIRIT Club platform * Being advised by any healthcare provider to avoid or restrict participation in moderate to high-intensity physical activity * Uncontrolled blood pressure, unstable angina, severe joint disease, uncontrolled or untreated dizziness or vertigo, or other medical issue precluding exercises leading to lack of clearance from a physician * \- e.g., * Unable to follow simple commands or persistent post-traumatic amnesia * Presence of expressive aphasia * Lack of fluency in English * Unable to follow simple commands or persistent post-traumatic amnesia * Regular participation (2 or more days per week) in a structured fitness program or platform (e.g., group exercise classes or personal training) * Regular participation (average of 1 or more days per week) in physical therapy services specifically for brain injury rehabilitation