Authors:

I used to take acting so seriously, but after we did the Quest pilot and the show sold, Kurt Russel said, "You know, you work too hard. You'll make yourself sick. You can't work that hard doing a series, because it goes on so long. It's like a baseball season. You've got 162 games. You can't just go all-out the first week or two. You can't maintain that pace." And it's true.

Source: film.avclub.com
I used to take acting so seriously, but after we did the Quest pilot and the show sold, Kurt Russel said, You know, you work too hard. You'll make yourself sick. You can't work that hard doing a series, because it goes