Why is my dwarf rabbit so hyper?

I just went out and bought a black female dwarf rabbit. She is about 4 months old. I got her today, and I'm wondering why she's so HYPER. I've heard that they are a hyper breed, but everytime I try to let her out to run she just wont stop. I'm scared to leave her alone when she's outside the cage, but I know you have to let them out for a while everyday. It's so hard to catch her to get her in the cage. Is this something that will pass, or is something wrong?