This move targets more muscles and adds a bit of a coordination challenge. From trainer Paige Hathaway
Trainer Joey Thurman demonstrates a twist on a common exercise by adding stability ball. Simple but effective
Trainer Jess Sims has a workout that pumps up the cardio in addition to hitting the abs. Variations to keep routine fresh
Try three of the most challenging core moves you can do. Balance and strength
Stimulate your muscles by increasing their time under tension. Follow instructor's lead
Hit every part of your body in just eight minutes. Go for the slam
This turbocharged variation of the standard move will send your heart rate soaring. High intensity
This circuit uses lighter weights, putting joint safety above all. See demonstration
This circuit trains you to hold tension in your trunk while moving your extremities -- the foundation for most athletic movement. See how it's done
This finisher ensures you get some focused core stability work, which will improve posture, minimize the risk of back injury, and improve athletic performance. From trainer Andy Speer