On Oprah's website she has a video of Valerie's exercise routine. In one exercise, she is on the floor with her hands holding the ankles of someone standing at her head. She raises her legs up and towards her head and the other person pushes them down. Can someone explain this exercise to me. What you are supposed to do and what the exercise works. Thanks.
http://www.oprah.com/media/20090318-tows-bertinelli-workout
http://www.oprah.com/media/20090318-tows-bertinelli-workout