'Just Do It': Screams 'Transformers' star Shia Labeouf in an 'inspirational speech'

Here is 'Transformers' star Shia Labeouf screaming out 'Just Do It' umpteen times with a green screen for a background. Though the video is being labeled as 'inspirational' and 'motivational', still it has led many to question Labeouf's sanity.

Do get 'inspired' from the video below!