When one attends a yoga class the teacher will give instructions on how to come in and out of the poses. The students will receive verbal explanations on what body parts to move and activate in order to do pose with correct muscular skeletal  alignment. Being visible to the instructor is important for appropriate feedback to be communicated to the student. The class will be active  and engaging so as to prevent the mind from wondering to the past or future.  By the end of class students may feel a sense of relaxation and ease.