The density of the bentonite particles. calculated from these data is 2.457 _+ 4 x 10 -7 g/cm 3. and the compressibility is 0.12 x 10 -12 _+ 2 x 10 -20. cmZ/dyne. The +_ values are asymptotic standard errors.
The bottom line is this: You burn fat and build cardiovascular fitness at both low and high exercise intensities. The logic is that at lower heart rates you burn more fat. At higher heart rates you supposedly burn less fat but get a better cardio workout. This is partly true, but let's take a closer look. For a 20 minute workout performed at a lower heart rate, you burn proportionally more fat as a fuel source, but fewer overall calories per unit of time.
The heart rate at which an individual burns the highest percentage of calories from fat is known as the aerobic base. The aerobic base is typically anywhere from 40% to 70% of an individuals' maximum heart rate (the easiest method of guessing target heart rate is to subtract your age from 220).et's say a female walked for 30 minutes in the fat burning target heart rate. She felt no muscle burn and could sing while walking. In those 30 minutes, a 130-pound woman burns 150 calories, and 70 calories burned are from fat.