While both groups experienced steady increases in heart rate throughout the exercise period, the fit group demonstrates a more controlled response, with a lower peak heart rate, a lower resting heart rate and a more efficient cardiovascular system, allowing for better performance during exercise and faster recovery afterward. Oxygen levels for the fit group showed a slight increase, from the baseline (97%) to the end of exercise (97.67%), remaining relatively stable throughout and returning to 97% during rest and indicating efficient oxygen delivery to tissues during physical activity and better aerobic capacity. This indicates enhanced cardiovascular function, better oxygen utilisation and improved respiratory efficiency in the fit group compared to the unfit