Side Effects. Side effects are rare; still symptoms like ear irritation, acute inflammation of the ear canal and pinna are reported. In some cases the pet might experience lack of appetite, vomiting, diarrhea, or hearing loss during the course of treatment, which might require immediate medical aid.
Furthermore, if the median age of a marathon participant is about 40, then the average maximum heart rate of a U.S. marathoner is about 180. Seventy percent of 180 is 126, while 80 percent is 144. Therefore, the heart rate of a mid-pack runner during a marathon is near the middle of the range -- between 126 and 144, or 135 beats per minute.
From this you can see that the average male takes about 2 hours to complete a half marathon and the average women takes about 2.5 hours.The average man is therefore running each mile in 9.5 minutes and the average women in just over 12 minutes.he half marathon is an endurance race as it is over a long distance so stamina and then speed will always determine your best time. The fitter that you can become at running long distances then the better chance you will have of improving times. Age is also important.