What is the best way to explain to a client how to contract the abdomen muscle? ADVERTISEMENT 1.61K viewsMarch 4, 2012 0 Celia March 4, 2012 0 Comments I have been a trainer for less than a year and I was asked by a client how to contract her abdomen muscles or what does it mean to contract your core….Especially when a client is not aware of muscle in that area. 6 Answers ActiveVotedNewestOldest 0 Curtis0 Posted 0 Comments I often use the “boxer blow to the gut” too….. It seems to be easily understood from there on. You are viewing 1 out of 6 answers, click here to view all answers. Register or Login