Timing:1 times per Day
Cupping your hand around your eyes focuses your concentration on one thing at a time and you can actually train your brain in this way.
Please refer to the book for more details on this activity.
Today I tried it after a long time..
There is one asana in yoga which is pretty similar. Except, we just need to humm ooommm internally.
I feel vibration within.
This is also a good treatment for Glaucoma. I did this today....
Well! I do that everyday right after I meditate! Plus, I chant "Ommm". Creates a vibration within! But, how long should I do to it? I do it for 30 seconds only.