Brain overload

I just did a lot of translating of French, and it really challenged my brain. I don't know how people can do such work every day, all day--it's hard to sit in front of the computer staring at text for more than a few hours, yet there are people who are able to translate full time. At one point, I developed a headache from so much analytical thinking, and I felt like my mind was functioning at full capacity, with no room to think about anything else. I'm going to resume translating later this week, and my mind will be happy to have a few days' break.