That's very interesting. I utilize the opposite strategy, wherein I take breaks by playing games that very immersive. I find that returning to Flow is much faster than when I go for a walk or read (whether book or social media). For example, 20 to 30 minutes of PUBG Mobile and I'm ready to Flow for another 90 minutes (assuming no other distractions).
And then my 1 hour drive of total solitude breaks me out of the Coding Trance, allowing me to be my best Self for my wife and children.
It's very surprising to me that breaking immersion increases your effectiveness.
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