Many sports indicate to hold the abs in while exercising; "button the belly button to the spine."
What are your thoughts on this?
Abs while exercising
August 31, 2009 - 2:15pm | 4 posts
#1
Abs while exercising
41 min 33 sec ago
09/10/2008 - 8:36pm
4 years 1 week ago
05/20/2009 - 10:19am
4 years 1 week ago
05/20/2009 - 10:19am