Is it normal to run regularly and have a heart rate of more than 40 and more than 50

Running

is an aerobic exercise that improves overall health by promoting cardiovascular fitness and improving cardiorespiratory function. People who regularly do aerobic exercise often develop strong cardiorespiratory fitness, which can lead to lower heart rates at rest, such as 40 or 50 beats per minute, which is generally normal as long as they are not accompanied by other discomfort symptoms. However, it should be noted that if the heart rate is low and there are discomfort symptoms such as palpitation, palpitation, dyspnea, etc., it is abnormal and further consultation with a doctor is needed to rule out any potential heart problems.