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masya89 [10]
4 years ago
11

After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. Which is the best explan

ation for what has occurred?
Biology
2 answers:
Hoochie [10]4 years ago
6 0
A build up a lactic acid in the muscles causes the pain and aching soreness.
IceJOKER [234]4 years ago
6 0
Lactic acid build up most likely. Lactic acid builds up in the body and causes the sore and achy feeling when exerting ones muscles. Lactic acid builds when oxygen is  not getting to the muscles fast enough. I hope this helps. 
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