I can run but not walk.Wherever i go, thought follows close behind me.what am i?!

Question: I can run but not walk!.Wherever i go, thought follows close behind me!.what am i!?

Its a riddleWww@Enter-QA@Com

Answers:

uh your imagination!?Www@Enter-QA@Com

A shadow!?
That's what I am!
Holly <33Www@Enter-QA@Com

A NoseWww@Enter-QA@Com

Nose!

~Lilme?Www@Enter-QA@Com

hahh
a nose
:)Www@Enter-QA@Com

a noseWww@Enter-QA@Com

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