Ear drum exercises:

For the outer ear drum, repeat the method for bringing energy to the hands, contracting the left and right sides of the anus. Inhale and then exhale completely. Put your index fingers in your ears; it should feel as if there is a vacuum in the ears. If it does not, then exhale more. Move your index fingers back and forth six to nine times at your own pace until you can feel that the insides of the ears are moving, and pull out the fingers with a quick movement. (Fig. 4.31) You should hear a “pop” sound, and you will feel that you can hear better and that your mind is clearer.