The study investigates the effectiveness of physical strategies in addressing Delayed Onset Muscle Soreness (DOMS) in physically active individuals. DOMS, a common phenomenon following intense or novel physical activity, is characterized by pain, inflammation, and functional impairments such as reduced range of motion, muscle strength, and endurance. These symptoms peak between 24-72 hours post-exercise and are attributed to micro-damage in muscle and connective tissue, followed by inflammatory responses. Despite extensive research, the efficacy of various therapeutic interventions remains inconclusive due to heterogeneity in study designs, outcome measures, and quality of evidence. The primary objective of this study is to systematically assess and compare the effectiveness of cold water immersion (CWI) or hot water immersion (HWI), in mitigating DOMS symptoms. This study will utilize a multi-arm, parallel, randomized controlled trial (RCT) design to evaluate therapeutic outcomes against a control group receiving simulated therapy. By employing a standardized exercise protocol to induce DOMS and unified assessment methodologies (e.g., biomechanical, biochemical, and functional tests), the study aims to provide robust evidence for the efficacy of these interventions. The findings will contribute to optimizing post-exercise recovery strategies, offering reliable therapeutic protocols for both clinical and athletic settings.