This project aims to address the limitations of fitness methods for submariners. Currently, there are no efficient exercise methods available due to the confined environment, resulting in poor physical condition and overall well-being. For submariners, most screening tests are only limited to physiological and psychological assessments. The project's main goal is to significantly improve the cognitive and physical well-being of submariners through the design of effective physical activity tailored to their unique environment. The project aims to develop a fitness method that increases endurance and strength while lowering the risk of injury and improving the submariners' mental health. The fitness method developed will be designed to be used in a compact space while also providing comfortability for the user. The goal is to also provide efficient feedback to the users in a way that is simple to understand and easy to track the submariners’ health and physical progress. Lastly, we hope that this project can promote further research on the problem, and lead to new findings of effective physical activity for submariners.