My Facebook Page
My Twitter Page
View All Videos
In basic terms, flexion is the shortening of the muscle fibers and extension is the lengthening of the muscle fibers.
So for example, in a bicep c...
View All Answers
Apr 09, 2014
View All Blog Posts
Herndon, VA 22030
Results 1-1 of 1
View all Personal Trainers in Herndon
View all Fitness Instructors in Herndon
View all personal trainer jobs in Herndon
Terms & Conditions |
Copyright © 2015 IDEA Health & Fitness Association. All rights reserved.