I know you adore when random people give you lifestyle advice, but I’ll take this chance to share an anecdote about screen use. My apologies.

I have a habit of spending most waking time on a screen. The other night I laid in bed without a screen for 5 hours trying to fall asleep. The next day I had significantly more energy. My conclusion is that laptop/smartphone use takes a lot of energy. And today, I read that the brain is 20% of energy usage. Maybe visual processing is a big slice of that 20%?