SCORES LOADING

SCORES LOADING

SCORES LOADING

SCORES LOADING

The Science of Running Backs

SIKIDS Video

This is the content to show when flash is disabled by the user.

The Science of Running Backs

Learn how NFL running backs use positioning, speed and acceleration to get into the end zone. See more at Science 360 or NBCLearn.com

Runtime: 5:24
Added: September 28, 2010 2:54pm

Your rating: None Average: 4.6 (26 votes)

BLOGS See all »