I wouldn’t have thought I would sense a difference on Day 2. But I do. There are several, but one in particular stands out.
The simple act of changing your habitual basket of stimuli opens you up in unexpected ways. What precisely you add to your basket of goods is somewhat irrelevant. I added yoga—but it just as easily could have been knitting or puppeteering. I feel more engaged, focused and clear. Is it that the synapses in our brains are a lot like our eyes? Your eyes take you at your word, based on your life filled with narrow deeds, that you no longer need the flexibility to perceive the expanse of the world around you. Stare at a computer screen all day long, you will become nearsighted. Experience the same two or three things day in and day out, you will become myopic in a different way.
“Who are you?” said the Caterpillar. This was not an encouraging opening for a conversation. Alice replied, rather shyly, “I—I hardly know, sir, just at present—at least I know who I was when I got up this morning, but I think I must have changed several times since then.” (Lewis Carroll, Alice in Wonderland)
An Idle Hand 