It is important to warm up before strenuous exercise because : (B). It strains the muscles if blood and oxygen levels are not already activated.
A warm up exercise prepares the body for a strenuous exercise by raising the flow of blood and oxygen in their appropriate levels into our muscles. and other parts of the body
When we warm up before a strenuous exercise we prevent muscular injury as well.
Hence we can conclude that It strains the muscles if blood and oxygen levels are not already activated.
Learn more about warm up exercise : https://brainly.com/question/1160263
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