Here is why weight lifting is crucial as a running back

If you're going to be a running back, you have to realize that you will likely be at a size disadvantage compared to the linemen who are intent on bringing you down. The average NFL running back is 5′ 11″ tall and weighs 215 pounds. Most defensive linemen are over 6 feet tall and weigh between 250 and 300 pounds.

So, when training as a running back, you have to focus on speed, strength and power. This will help you explode through the line, protect the ball and get clear into the secondary.

I know that every single position needs to train hard. However, a running back needs to be particularly strong and explosive.

Here are examples of the importance that weight training has for a running back: