Great Video below by Kenneth Freeman from TRE® Seattle.
This video is from Kenneth Freeman (a martial arts teacher). His body movements, while standing, provide a rare opportunity to see unusual patterns of the tremor response that are often present in sports practitioners. Since the movements often seem to mimic the specific sport movements, I can only attribute this to muscle memory or muscle entrainment that is evoked by the tremor mechanism. If you have questions or comments about this video please contact Ken directly on his website: http://seattletre.com/