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http://gettingridofbellyfat.blogspot.com/ Bicycle Crunch Exercise came in at the top spot in the research done to find the best exercises for the rectus abdominus. A study done at San Diego State University compared thirteen common abdominal exercises in an effort to determine the best. Each exercises was ranked for muscle stimulation--measured with EMG--in the rectus abdominis, the external obliques and internal obliques.