Thank you kamilliano for pointing it out. I strongly agree with you on that front whether it's to do with burn out or plain simple enjoy life. A healthy balance of work and life is definitely important.
When I wrote the article, I was with the mindset that, just like work, socializing, fun, exercise are also important and if any time left then it's free time but, I suppose it could be interpreted in different ways and I could have been more clearer.
I will update the line to make it clear.
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