This study investigates whether four weeks of Rhodiola rosea supplementation can improve physical fitness, neuromuscular performance, and decision-making ability in competitive male football players. Participants are randomly assigned to receive either Rhodiola rosea or a placebo while continuing their regular football training. Before and after the four-week intervention, all participants complete a series of tests, including aerobic fitness, repeated sprint ability, jumping performance, reaction time, and soccer-specific decision-making tasks. Blood samples are also collected to assess fatigue and recovery-related markers. The purpose of this study is to determine whether Rhodiola rosea supplementation can enhance performance and cognitive function under high-intensity training and competition conditions.