Final answer:
Warming up is important before exercise as it increases body temperature and improves muscle function.
Step-by-step explanation:
Warming up is an important part of any exercise or physical activity routine as it helps prepare the body for more intense movements. One true statement about warming up is that it increases the temperature of the body. This increase in body temperature helps improve muscle function by increasing blood flow and promoting the delivery of oxygen and nutrients to the muscles.
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