Core exercises??

[ckbputt3]

What are core exercises and how should I apply them to go from 220 lbs to 170 lbs? diet is good....I eat the way shapefit.com recommends...I'm a truck driver, so activity level is extremely low?
Thanks in advanced!!!

[swanso5]

pelvic tilits
prone ab braces
side ab braces
wall ab isolations
stomach vaccums
deadbug series

you'll need more activity than that to drop that much wt though

[giselleb]

What is the best way to work the core?
View a video response by an exercise science professor:
http://physicalfitnet.com/ask_the_fitne ... ore-3.aspx