Final answer:
The measure used to determine whether it is too cold to exercise is called the wind-chill factor.
Step-by-step explanation:
The measure used to determine whether it is too cold to exercise is called the wind-chill factor. This factor takes into account the combination of wind speed and temperature to calculate the perceived temperature on the human body. When the wind blows, it can make the air feel colder, which affects how our bodies lose heat.
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