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These of course, are not the only intervals sets that make sense; however, they also consider «the who» and attempt to create a work to rest (interval) workout that intends to push people to their limit without overexerting themselves, as well as gauging how well they are recovering. (weckmethod.com)
in a single game, probably to help the scoreboard operator from overexerting in a high - pressure situation (sbnation.com)