John Edensor Littlewood wrote in page 197 of Littlewood's Miscellany
"For a week without teaching duties - and here I think I am preaching to the converted - I believe in on afternoon and the following day off."
"At one time I used to work 7 days week (apart, of course, from 3-week chunks of holidays). I experimented during the Long Vacation with a Sunday off, and presently began to notice that ideas had a way of coming on Mondays."
What's the optimal frequency at which math students take complete days off math? How many days off? By "break" I mean at least a whole day away from math, and not just a break every hour. Is there any research on this?
What's the optimal frequency at which math should be paused for long breaks/vacations? Is there any research on this?
Is there any research on the subject of breaks/rest periods for math students? I'm very interested to hear what other mathematicians have done as students.