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.
Once you know your maximum heart rate, you can calculate your desired target heart rate zone â the level at which your heart is being exercised and conditioned but not overworked. The American Heart Association and the Centers for Disease Control and Prevention recommend a general target heart rate of: 1  Moderate exercise intensity: 50 to about 70 percent of your maximum heart rate. 2  Vigorous exercise intensity: 70 to about 85 percent of your maximum heart rate.