The Candle Burning Guide - Center Burning Candles. Certain candles are designed to burn down the middle for different reasons, or a combination of different reasons. Candles with a unique finish, or unique burning characteristic, may burn down the middle in order to position the flame inside of the candle and illuminate from the inside out.
To find your maximum heart rate, subtract your age from 220. For example, if you are 40 years old, your maximum heart rate is 180 (that is, 220 - 40 = 180). Multiplying this by 50 percent and then 85 percent results in your target heart rate range of 90 to 153 beats per minute.
The normal heart rate range is 60 to 100, with below 60 known as bradycardia and above 100 known as tachycardia. People who are conditioned or athletic are going to have a resting heart rate closer, if not lower, to 60. The heart is a muscle, so the better condition of the heart the lower the heart rate. The lower the heart rate will make it a little harder to achieve a higher heart rate zone which means the level of fitness is greater than someone that achieves their heart rate zone faster.