This videos shows you how to do a proper quadruped stretch using good mechanics. Often people tend to do this exercise incorrectly putting excessive stress on the low back while not stretching the front of the thigh effectively.

Tweetables:

Preventing and Stretch for Low Back Pain. [Click To Tweet]
A Proper Quadruped Stretch using Good Mechanics. [Click To Tweet]
Effective Lower Back Stretch. [Click To Tweet]