Now I'm going to demonstrate how to do a long-arm weighted crunch.
So we're going to take the two eight-pound dumb bells, like so. Lie down with your legs 90-degree angles. Keep your arms straight above you, and you're just going to sit up and do a crunch. Keep your arms as straight as possible. Hold that position for a one or two count. Lower back down but don't stay on the ground long, to keep the resistance in the upper abdominals. Exhale as you come up.
Remember to put all the emphasis in the upper abdominals here as you breathe up. Do high repetitions. Any time you do abdominals you want to keep the repetitions high, especially when you're doing crunches.
And that's how you do a long arm weighted crunch.