Blood profile of opossums Didelphis aurita and D. albiventris of Sao ... by Casagrande, Renata Assis; de Oliveira Cesar, Marina; Horta, Mauricio Claudio; Rossi, Silmara; Teixei / Acta Scientiarum Biological Sciences (UEM).
Now youâre ready to determine your target training heart rate. As you exercise, periodically: Take your pulse on the inside of your wrist, on the thumb side. Use the tips of your first two fingers (not your thumb) to press lightly over the blood vessels on your wrist. Count your pulse for 10 seconds and multiply by 6 to find your beats per minute. You want to stay between 50 percent to 85 percent of your maximum heart rate. This range is your target heart rate. Know Your Numbers
You'll know that you've found your pulse when you can feel a small beat under your skin. Each beat is caused by the contraction (squeezing) of your heart. If you want to find out what your heart rate is, use a watch with a second hand and count how many beats you feel in 1 minute. When you are resting, you will probably feel between 70 and 100 beats per minute. When you run around a lot, your body needs a lot more oxygen-filled blood. Your heart pumps faster to supply the oxygen-filled blood that your body needs. You may even feel your heart pounding in your chest.