If you want to see serious improvements in your fitness level, you have to push your body to the limit – then do it again. The processes that makes your muscles feel sore also strengthens them and being winded trains your body to better conserve oxygen. Though pushing your physical boundaries is healthly, pushing them too far can be dangerous and debilitating. The key is to know when you're overdoing it.
Dr. Christopher Kaeding, professor of orthopedics at Ohio State University and head team physician for the Buckeyes offers some insight.
Any irregular chest pain experienced during exercise should be taken seriously. Chest discomfort can be indicative of a heart attack or angina – a blockage in the blood vessels of the heart that reduces blood and oxygen flow to the heart. Not all chest pain is the same, it can feel like burning, stabbing, tightness, or achiness. If you're experiencing chest or heart pain when you work out, you should talk about it with a medical professional right away.
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