I was looking on the internet for target heart rates. I can't find any target heart rate tables specifically built for athletes. My resting heart rate is usually between 50-58, but I can get it 210+ easily after doing bike sprints. Usually I go hard at things unless or until I feel actual pain or the burning sensation becomes too intense. Can anyone help me determine my target heart rate? I'm worried though because I heard that generally speaking the way to calculate target heart rate is 220-your age so that would leave me at 201. Thats fairly easy for me to reach, how high can I safely go?