Cardiovascular exercise is the best you can get to prepare yourself for a sport like football. Stretching your muscles is also good because it can help you prevent many kinds of injury, which a running back can sustain.
The best strengthen as a running back is the arms. This is in football.
Barry Sanders
Gale Sayers or Walter Payton.
Adrian Peterson is the best.
barry sanders and gale seyers
De' Anthony Thomas
Priest Holmes, Landnien Tomlison, Darren Mcfadden
You should try websites like runnersworld.com and livestrong.com to get the best running exercises best fit for you and remember to stretch before and after.
A LOT Topps Stadium Club Best Offense Running Back Card?
Tie between Javon Ringer and Jehu Caulcrick
Working out with weights is the best way to build strength in the upper and lower body. To work on agility you should try running through obstacles which force you to move your feet properly. Endurance is best served by running or swimming long distances.
OK the best are soccer because of all the running and kicking and running back and fourth(center).Football because the running the taclking.basketball you might wanna tryout before head a time