LET'S GO WORK OUT
'(<a href="http://www.j-archive.com/media/2006-06-16_J_03.jpg" target="_blank">Jon of the Clue Crew reports from Bally Total Fitness.</a>)  Biologically, it means living without oxygen; in the gym, it's the type of exercise that builds muscle with bursts of exertion'
anaerobic