Taking Breaks every 90 Minutes will Improve Your Copy
Every 90 to 120 minutes... I'll take an hour off... whether I'm at home, at a coffee shop, or at my agency.
After that break, I'm more focused and can think more clearly on the topic again.
Here's a really cool article on the subject of how 8 hour work days came about and why they're not very productive...
The 8-Hour Workday Doesn't Really Work | LinkedIn
I know that a lot of writers have mentioned they don't work "regular" 8 hour days... but if you do put in a straight 8 hours... start taking breaks every few hours and you'll see the quality of your writing improve... guaranteed.