I'm Jeremy Shore for livestrong.com, with tips on getting a tighter core. To achieve a tighter, more stable core, it's important to pick exercises that challenge you to maintain a strong foundation while dynamically moving around that stable base of support. Exercises like the rolling side plank, the Swiss ball roll out and the dynamic bird dog will build these core qualities. Let me show you. First exercise we're going to do is a rolling plank. Come down into your mat in a plank position with your arms turn inwards. From here, a straight body from ears to ankles. Abs are tight, gluts are tight. Then, we're going to roll to one side by dropping our feet, lifting one hand into the air, keeping everything long and rigid. You're going to bring the hand back down and then switch sides. Rolling through side to side, keeping the hips up nice and tall throughout the entire movement. Next, we're going to incorporate a stability ball roll out. From here, sit up tall on your knees, fingertips on the ball. We're going to roll out, dropping our hips towards the floor, so we fall on a straight line between our arms down to our knees. Pausing for a second, engaging the core and then roll back up. So, you roll out, hips are dropped forward, engage the core and roll back up. Then finally, we'll finish with a dynamic bird dog. Come on your hands and knees, hands directly below your shoulders, knees directly below your hips, we're going to reach out with opposite hand and opposite foot extending. And then from here, we're going to draw our knee in and our elbow in, contracting the abs and then extend right back out. Perform a given number of reps and then switch sides. Whew! Whew! Whew! Whew! I'm Jeremy Shore for livestrong.com and this has been tips on getting a tighter core.