Labels:bulletin board | daily | gazette | sky OCR: The offensive lineman who worries too much about protecting his quarterback will brace as he gets ready to block. He ends up working against himself by tensing muscles he shouldn't tense When he should be tightening just the extenso muscles to push back the linebacker, he also tenses his flexors. His doubts cause him to shift his center of mass back- wards making him an easy target for the charging opponent guarterback
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