Mental imagery(mental practice, guided imagery) is just what it sounds like. You imagine a movement without physically doing it. Can this help? Well, this study says it can. This study says that if you spend time practicing a movement mentally, you get changes in the brain. This study says it doesn’t help. This study says it’s inconclusive whether mental imagery helps, that more research is needed. My opinion? Certainly can’t hurt! And yes, I think it helps. They told us to have patients do this in school. Before physical attempts of a movement, they taught us to have the patient mentally practice. I kind of do it when I’m on the treadmill. Sometimes on the treadmill, my right leg doesn’t do exactly what I want it to do so I imagine it being physically lifted forward. This isn’t really mental imagery because I’m simultaneously performing the action, but it helps a lot. Whether that’s actually helping to change anything in the brain who knows but it helps during performance of the actual movement.