This video has two great ways to take your planking to the next level and help you get the core you've always wanted. Pay attention to the technique because that's were the results come from.
If you haven't already watched out video on how to a plank RIGHT please check it out. It's unlike any other plank you've done before.
if you've ever wondered why we don't do crunches at TBYW, check out this blog post on why they don't work and might be dangerous.