Hardie plank siding is a premium brand of cement board siding (also known as fiber cement board siding) produced by the James Hardie Company.ardie plank can be purchased with a wood-grain look, a plain smooth look or a stucco type finish. Hardie plank also comes in simulated cedar shingle planks.
activity duration. Period (hours, days, weeks) required to complete an activity. Activities with zero duration are called milestones.
Although these components make up a physical activity profile, research has shown that the total amount of physical activity (minutes of moderateâintensity physical activity, for example) is more important for achieving health benefits than is any one component (frequency, intensity, or duration).