Yep, I've been doing 40 minutes focus (on timer) then 10 minutes (+) leisure.
The idea is if you're doing creative work, better to focus for short bursts and give time for ideas to bounce around in your subconscious.
And then after about 5 hours I feel burned out, and go do something else till I don't.
OP, no-one said you can only do four hours A DAY, just that you most efficient for four hours at a time.
(Actually, I haven't read the book by CN, maybe he did...)
The idea is if you're doing creative work, better to focus for short bursts and give time for ideas to bounce around in your subconscious.
And then after about 5 hours I feel burned out, and go do something else till I don't.
OP, no-one said you can only do four hours A DAY, just that you most efficient for four hours at a time.
(Actually, I haven't read the book by CN, maybe he did...)