Taking that one step further- I think I am one of those people!
I have my clothes laid out and ready to go, including shoes and socks. If I know it's going to rain, I have the rain gear ready to go.
I have my water bottle pre-filled and sitting in the fridge and ready to grab as I walk out the door.
My toolkit is packed and ready to go, and I have all my id's in the kit in case I have problems.
I have my cell phone charging, and I usually extend the cord so that I can leave the cell phone in my bag and just plug it in while it's laying in the bag so I don't accidentally leave my cell phone behind. It works.
The only thing I have to do is wash my face and slap on some deoderant once I put my clothes on. I just hate wasting time, really.