Intense Core Exercise: Wipers using a Pull-up bar

Chest Bump everybody!!!! I was named Coach Of The Year yesterday, thanks for all the support everybody!!! On to the vid; this core exercise is on the advance side. Find a pull-up bar, pull yourself up midway drive your knees up and begin twisting, limited range of motion to begin with and the stronger you become, larger the range of motion. Thanks for viewing, create a great day! -Coach T