Maximum heart rate
What is the Maximum heart rate?
When you exercise, your heart speeds up to meet your body’s energy needs. If you know your target heart rate, you can make sure you’re exercising hard enough to get a good workout, but not too hard to strain your heart. Your target heart rate is a range, expressed as percentages of your maximum heart rate. (Your maximum heart rate in beats per minutes is based on how old you are — it’s 220 minus your age.) For most people, the American College of Sports Medicine recommends a target heart rate while exercising of 50% to 85% of your maximum heart rate.