Fitness Target Zone
I do not know how to put these words in metaphors!?
I have to write a metaphor for all those words that I can get credit for PE. Do not ask me why. FITT principle frequency of the intensity of the target formula adequate physical training overload threshold
How about the use of a printing machine or the old newspaperman Linotype metaphor? Publication Frequency Required per day, or you miss some news. The intensity press must be located just to the right and the printing is too light reading (no good) overload could cause a paper jam, waste production and back on your goal, you want your target audience for most pay-off on the advertising investment. Training Threshold ~ Hey, I'm not going to give all the answers here!