Feeling a GOOD burn: literally means the sensation of lactic acid buildup inside the muscle caused by a high metabolic rate during intense exercise. The lactic acid produces achiness until it is gradually released from the muscles. But what you MIGHT be experiencing is a BAD burn, which is a MUSCLE STRAIN, and this is NOT a good thing. Make certain to stretch slowly but completely for 10 minutes before running.
Answered 2/15/2017
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