When I worked for lawyers, it was never 9-5. During a trial, I would be working 7 days a week till the wee hours of the morning. I'd go home, get maybe a couple of hours of sleep, then get up, shower, dress and back to the office. One particular trial -- I didn't go home at all for 2 days. Smelled rather ripe by the end of the second day. LOL
But that sort of life is very unhealthy. Constant work, lack of sleep, enormous stress, poor eating habits and no exercise -- sooner or later, it catches up to you. It did for me.