Sorry got that, was more replying to the guys saying that in your average 8-10 hour day you'll only do 4 hours of intense work anyway (so that a 4 hour "actual work" day is kinda normal).
Try being a lawyer.... 16 hours days standard and when you are being charged out at $500 / hour (and receiving maybe 20% of that) your boss isn't expecting 4 hours of real work and 12 hours of admin... they want 16 hours of extreme concentration. Gotta be one of the worst careers you can choose.