9 kcal. For a person weighing 70 kg running up four flights of stairs in 45 seconds, the calories burned equal roughly what you would get from a couple of jelly beans! To calculate the calories, use the formula:
t × (MET × w × 3.5)/200
Where:
t is the time used;
MET is the metabolic equivalent of the task, equaling 8.8 for a run up the stairs; and
w is the weight of the person.
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