5 ms·
It's 4 hours for me. Doesn't matter how long the day is, maximum concentration tops out at 4 hours. The rest of the time is just admin work, emails and house ke
by jinglebells 7y ago
It's 4 hours for me. Doesn't matter how long the day is, maximum concentration tops out at 4 hours. The rest of the time is just admin work, emails and house keeping.