I started reading his book Breath , and he made the starting claim that, in essence, you could choose to be either energetic or restful by picking one nostril to breathe out of for awhile. (Naturally we breath out of one nostril at a time, and the body goes back and forth, but "it's a balance that can also be gamed"). I found this claim a bit... suspicious, and Googled, and didn't find much scientific evidence for th…
Or try this -
Take breath with right nostril only - you'll feel warm or more energetic. Later take breath with left nostril only - you'll feel cold or more relaxed.
You can gamify this system when you certain type of tasks.
Or ask any old-school Yoga/Meditation teacher, preferably someone with roots in India.