When exercising below maximum oxygen consumption the comparatively small muscle mass of the arms make upper body exercise a greater challenge to your cardiovascular system than equivalent lower body exercise.  Your heart has to work harder to deliver oxygen to those hard working muscles! This leads to higher cardiac output and oxygen consumption. Our rope will hard to fray break or come loose. It is extremely hard-wearing and provides excellent resistance for strength training. Perfect for cardio training it will improve your endurance of shoulders increase reaction time & metabolic rate.   If you are looking forward such a training rope do not hesitate to buy one!   Yellow tracking line convenient for maintenance Heat shrink caps on the ends High tensile strength Build stamina Increase VO2 levels Improve cardiovascular health Gain lean muscle mass Burn fat Strengthen core musclesColor: Black Size: 30 ft 1.5" diam Material: Polyester dacron Package included: 1 x Poly dacron fitness rope