Did you know?
The normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies a more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute. However, during pregnancy, the amount of blood pumped by the heart increases by 30 to 50%. As a result, the heart rate tends to increase from a normal pre-pregnancy rate of about 70 beats per minute to as high as 90 beats per minute.