I vaguely remember some IBM study (maybe someone has the link?) on code reviews that concluded 45 min is the average sweet spot afterwhich bugs start slipping t

I vaguely remember some IBM study (maybe someone has the link?) on code reviews that concluded 45 min is the average sweet spot afterwhich bugs start slipping though. It also mentioned how long one should stay away from the screen to get back to top performance. (Simple things one can do 20 hours per day ofc)