In this video segment from Cyberchase, Harry visits a fire station and learns some facts about firefighting. He then decides to train to become a firefighter, but first he must pass both written and physical tests. To practice for the physical part of the test, he works out on a stair climbing machine in shorts and a t-shirt. He keeps track of his steps per minute on a line graph. He does the same exercise during his test, but this time he's suited up in full fireman’s gear. He and his training instructor compare the results represented by each line graph.
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