Exercise intensity is the most influential aspect of a workout. It impacts how many calories are burned, how much blood is delivered to muscles, the amount of CO2 removed and what the body uses as its primary fuel source. All that basically means is that the body responds and adapts to the demands placed upon it during exercise.Its important to understand what exercise intensity matches your goals in order to see the results you want. Whether burning fat, strengthening the cardiovascular system or increasing performance is the goal, there is an appropriate intensity to match each.
Now lets back up and spell everything out.