Intensity refers to the percentage of a lifter’s maximum capacity used during a training session. This metric helps athletes and coaches manage the physical stress placed on the body muscles. High intensity means lifting weights very close to the personal record of the individual. A trainee performs a workout at eighty percent intensity to build consistent strength. Balancing high and low intensity days prevents injury and allows for proper muscle recovery. Tracking intensity ensures the lifter makes progress without reaching a point of exhaustion.