Found this great video of a talk by a neuroscientist where she describes her experience of the distinctive characteristics of the left and right hemispheres of the brain. In qigong practice we seek to become aware of both these aspects of our personality and our existence and to balance and harmonize them. These two aspects correspond with the principles of yin and yang.
The speaker has quite a vivid way of describing these two aspects and a remarkable story of how she came to have her personal experience of these – through a stroke.
Well worth a watch and might make you think a little differently about your qigong practice.