McGill Curl Up and how to do this ab exercise right:
http://absexperiment.com/mcgill-curl-up/
McGill Curl Up is one of those ab exercises that is used to prevent and even relieve lower back pain. It is widely popularized by the world’s top spinal researcher Stuart McGill. I have used this exercise with my clients with a great success.
To avoid any deterioration of your lower back or avoid aggravating pre-existing damage, pay close attention to the correct technique and form of the exercise.
MUSIC:
"Big Mojo" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/