shopping cart is also used as part of therapy. take a look here. obviously julie helping if i have right leg weakness, moving my leg along, preventing me from falling. >> okay, it's pen, use your lips. >> reporter: now remember, with congresswoman giffords, speech is also a concern. especially since she has a trache and learning to use it is part of therapy. >> what we have here is a speaking valve. if they're tolerating that, we'll try to get them to speak. >> reporter: but hear's the thing. all these different therapies work together. for example, remember music therapy? >> i'm going to go ♪ lean two, three, four push up, two, three, four ♪ >> reporter: the music isn't just rehabilitating the mind but teaching patients to walk. and sometimes -- >> and i'll give them a song to get their mind off the pain.