This study aims to examine the biomechanical variables and muscles involved in performing a straight punch from different distances, to explain and clarify the strength and speed of the punch and the muscles involved in the movement. Reaching the highest levels is the goal sought by every athlete, and scientific progress in the field of sports training and movement analysis using modern methods and techniques has led to rapid development in achieving these levels of ideal performance in boxing. To achieve further development, scientific research must be directed towards further studies of the precise requirements of the nature of the sport practiced and the distinctive specialization of its performance. Focus must be placed on the field of movement analysis to understand the important points in movement and the extent of its development. The researcher used a descriptive approach based on biomechanical analysis and recording of muscle electrical activity, as it was appropriate for the nature of the research. The study was conducted on three players from the Egyptian first-class boxing team. All measurements were conducted in the Biomechanics Laboratory at the Faculty of Sports Sciences, Alexandria University, during the period from May 7, 2025, to May 15, 2025, until the analysis results were extracted. The researchers recommended the following: - Studying differences between athletic levels: Researchers could conduct comparative studies between athletes of different levels (beginners, intermediate, and professional) to understand how punch biomechanics develop with experience. - Using advanced measurement techniques: Motion sensors or force platforms could be used to obtain more accurate data on propulsion force and muscle activity, allowing for a deeper analysis of movement. - Effects of fatigue: The effect of fatigue on the performance of the long straight punch could be studied, and whether fatigue leads players to use the less effective medium punch. Keywords: Electromyography, Biomechanical variables, Right jab, Boxing