Now, I'm going to demonstrate how to do a dumbbell twist with a dumbbell.
Keep your arms straight out. Interlock your fingers or overlap your hands. You're just going to keep it around chest level or slightly below it. You're going to twist to the left, twist to the right. Squeezing the obliques each time you twist. You really feel this in external and internal obliques. Keep your ground. Don't move feet. Just rotate your torso, so you really get the most out of this exercise.
We're going to demonstrate another variation of the dumbbell twist. It's a little bit more advanced so we can actually increase your endurance a little bit more. Starting out with your feet shoulder width apart again. You're going to twist. Then you're going to actually pivot and twist the opposite way. Pivot again. Twist, to, when you do it and it's all said and done, you're just going to keep moving into one fluid motion so you're not having any gaps in between.
Just notice, I pivot my legs when I twist with the dumbbell. This gives you a little bit more of a variation to get the heart rate up a little higher. That's how you do a couple different levels of the dumbbell twist.