http://www.salsacardio.com/content en-us http://www.salsacardio.com/content N/A support@cquis.com Sun, 05 Sep 2010 12:15:30 -0700 20 http://www.salsacardio.com/content/articles/4/1/Clamshell-Crunch-with-Ball/Clamshell-Crunch-with-Ball.html Sit on a mat and place a stability ball between your legs (at your calves/ankles). Squeezing the ball in place, lie back onto the floor, keeping your feet just off the ground, knees bent. liliana@salsacardio.com (Liliana Zerpa) Mon, 26 Mar 2007 00:00:00 -0800