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A benthic trawl is an enormous net dragged across the ocean floor. The net is held aloft with large floats, and kept down with a heavy steel trawl door and weights. The pocket of the net is known as the "codend." The drag marks left behind from the trawl are caused by the rollers, up to five tonnes each, which Bring up a dust cloud from the sea floor that can last for days. Benthic trawling has been used for over 500 years.

Elite players, coaches, and trainers rely on plyometrics to develop power, agility, speed, strength, body control, balance, and overall athletic performance. With this authoritative guide on plyometrics, you can too

In Plyometric Anatomy, authors Derek Hansen, coach and consultant to elite athletes and professional and collegiate sports teams, and Steve Kennelly, assistant head athletic trainer for the New York Football Giants, share the training they've used to propel athletes at all levels to success. They present 94 plyometric exercises, with 78 variations that...