I work as a lawyer. When I do brain work such as research, contracts or court meetings, I believe 3-4 hours a day is the max I do continuously. If I have more p

I work as a lawyer. When I do brain work such as research, contracts or court meetings, I believe 3-4 hours a day is the max I do continuously. If I have more phone calls, client meetings etc., it's easier to do the 8 hours.