I find the obsession over efficiency to be a bit confusing. It's an obsession at all costs. "It doesn't matter, just be more efficient."
I used to subscribe to that ideology but I finally realized that at some point as you make your thing more efficient, it just stop being enjoyable. It's in the office doing more work faster. Or organizing your morning to squeeze one more chore in, or subscribing to some ridiculous way of studying to learn a little faster.