When I used to train martial arts seriously, I often would wake up finding myself executing a joint lock on my pillow or something similar. I had to move my be

When I used to train martial arts seriously, I often would wake up finding myself executing a joint lock on my pillow or something similar. I had to move my bed away from the wall to stop me from punching holes in it. I was always terrified that I would injure my girlfriend at the time, but somehow I seemed to limit myself to inanimate objects. I stopped training about 10 years ago and haven't had a problem since. Other people have told me it is actually quite common.