Using your lower body

What does it mean when someone uses their lower body to pitch?

Greg

They move their body and let it “fall” towards the target. It takes stronger legs to handle the pressure but they get really good momentum with their hips moving forward and it can really help your speed out.

hmmm… Well i dont know if i do that… I was told yesterday when i pitch from the stretch to not raise my knee up as high as i do when i pitch from wind-up…

u generate power with ur lower body (legs, etc.)

aka pushing off the rubber? right?