An easy way to find out is by knowing your target heart rate. A normal resting heart rate is usually between 60 and 100 beats per minute. For healthy people, your target heart rate is where your ...

From here they can use the zone thresholds above to calculate their individual target range. For example, a person partaking in moderate-intensity exercise should aim for an active heart rate of ...

Over time, if you watch your heart rate during exercise, you'll start to notice which numbers go with which feelings. Knowing that you see (for example) 140 on your watch when you're in the middle ...