By eHow Sports & Fitness Editor
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When you exercise, it is very important to strengthen your core muscles as part of your exercise routine. The core muscles include the muscles of the back and the abs. These muscles support the spine and keep your body well-balanced and supported. When you strengthen your core muscles, referred to as building core strength, you will improve your overall fitness and help reduce back pain. Read on to learn how to strengthen core muscles.
eHow Sports & Fitness Editor