by Linzay Logan, Published May. 17, 2011, Updated May. 17, 2011 at 9:08 PM UTC
Cruches have long been the go-to exercise to tighten and chisel abs. The easy movement of lifting your head, neck and back while engaging
Start your FREE subscription to Competitor Digital today!
Get our monthly digital magazine, weekly running content & exclusive offers delivered to your inbox.
© 2014 Competitor Group Inc. All Rights Reserved