Asteroid Belt. About 2-4 AU (186-370 million miles) away from the Sun, between the orbits of Mars and Jupiter, is a region called the Asteroid Belt. This region is a ring of tens of thousands of relatively small rocky objects called Asteroids. Asteroids can vary greatly in size.
A normal pulse rate for a healthy adult, while resting, can range from 60 to 100 beats per minute, depending on athletic ability. [ Source: http://www.chacha.com/question/what-is-your-pulse-supposed-to-be ].
Normal Heart Rate Ranges. The normal heart rate for adults generally ranges from 60 to 100 beats per minute. This means your heart normally beats one to two times per second.Calculate your resting heart rate by placing your index and middle fingers on your neck to the side of your windpipe.ormal Heart Rate Ranges. The normal heart rate for adults generally ranges from 60 to 100 beats per minute. This means your heart normally beats one to two times per second.