Three reasons to do ... bicycles

The move: Bicycles

Three reasons to do it now

• Amp up your abs: It's the most effective ab exercise out there, according to researchers at San Diego State University, who ranked 13 of the most common core moves. Why? Bicycles require more abdominal stabilization and body rotation -- which fire up the muscles -- than any other move.

• Two words: ab-solute domination: Using electromyography equipment, the same San Diego State research team found that bicycles require 148 percent more activity in the rectus abdominus and 190 percent more activity in the obliques than the standard crunch.

• Six pack = sick skills: Building a stronger core will help you generate more powerful movements -- giving you a more explosive swing, serve or 3-point shot.