Mokuso (黙想) Is what we call the kneeling meditation at the beginning and end of each class. It is a time to let go of your day and your stress and prepare and by calming your mind and also a way to seal the practice in your body at the end of training.
Moku 黙- silence; become silent; stop speaking; leave as is
So 想- concept; think; idea; thought
Mokuso,a time to breathe, let go of the “sound” and negative thoughts of your mind. Bring yourself into the moment to prepare for practice and to end the practice with a calmness to take with you.