One of the most surprising things about the black colored pair of eyes is that true black eyes are very rare. What we see and call as black eyes are in actuality just very dark brown eyes. The dark brown or black, as we may call it for own usage is often associated with night, mystery and intuition.
There are different ways to calculate your target heart rate zone, but the Karvonen Method is one of the most effective because it factors in your resting heart rate. Here's how to calculate your target heart rate zone using the Karvonen Method: 1. Measure your resting heart rate when you first wake up. You can do this by taking your pulse for one minute while still in bed. To take your pulse, place two fingertips (not a thumb) on either the radial (on your wrist, at the base of your thumb) or carotid (neck, next to your larynx) pulse site.
Your pulse can be felt by placing 2 fingers on the inside of your wrist, the side of your neck, the inside of your elbow or the top of your foot. Count the beats for 1 minute to determine your heart rate. This rate varies throughout the day, and is affected by your fitness and health. Your resting rate, with a usual range between 60 to 100, is captured when you are calm, sitting or lying down and relaxed.