You're kind of messed up, and your vestibular system is what's affected the most. At least that's what's most noticeable when you first get back. Actually, the first thing I noticed, let me back up, is how heavy things were. Again, I took off my helmet, and I was holding it in my hand, and it felt like I was holding the anchor to the USS Nimitz. I'm like, how am I ever going to brush my teeth? It'd be too arduous.