yup. i think i have some enlightment about what is the hobby of
doing nothing.
first, this can be seen as a hobby like other hobby. in this hobby,
you do not need to close your eye, or have a posture. the
conditions are that you must not be sleepy, or feeling any
discomfort.
the venue can be anyplace. toilet, dark place, sitting, stading
lying down. you can turn on some sounds like fan, vacuum cleaner,
water.
you should not be thinking about anything, or focus on any
senses.
let your body and mind be in idle mode. i guess its just another
relaxing hobby to do and should have some theuraptic effect because
the body is in idle mode and it also trains you not to think about
anything. as you know, when people are stress they tend to keep
thinking.