Title: The Impact of Physical Activity on Mental Health and Well-being Introduction: Physical activity is a fundamental component of a healthy lifestyle, with numerous benefits for both physical and mental health. This study aims to investigate the relationship between regular physical activity and mental well-being among adults. We hypothesize that individuals who engage in regular physical activity will report higher levels of mental well-being compared to those who lead sedentary lifestyles. Methodology: Participants: The study will involve a sample of 300 adults aged 18 to 60 years recruited from diverse backgrounds. Procedure: Participants will be asked to complete a self-report questionnaire that assesses their physical activity levels and mental well-being. Physical activity will be assessed using the International Physical Activity Questionnaire (IPAQ), while mental well-being will be measured using the Warwick-Edinburgh Mental Well-being Scale (WEMWBS). Additionally, demographic information, such as age, gender, and employment status, will be collected. Data Analysis: Statistical analysis will be conducted using appropriate techniques, including correlation analysis and regression analysis, to examine the relationship between physical activity levels and mental well-being while controlling for relevant demographic variables. Expected Results: We anticipate finding a positive correlation between physical activity levels and mental well-being, suggesting that individuals who engage in regular physical activity are likely to experience higher levels of mental well-being. This outcome would highlight the importance of incorporating physical activity into daily routines as a means to enhance mental health and overall well-being. Implications: The findings of this study may have significant implications for public health campaigns and interventions aimed at promoting mental well-being. If the hypothesis is supported, it could emphasize the importance of encouraging physical activity as a strategy for improving mental health outcomes among adults. Conclusion: This study will contribute to the growing body of research examining the link between physical activity and mental well-being. By providing empirical evidence on this topic, we hope to raise awareness of the benefits of an active lifestyle and inform future health promotion efforts. [Note: This is a concise one-page study outline. Actual research studies would include more details, such as a literature review, ethics considerations, and a discussion of limitations.]