Some people feel physical work is easier. Some people feel cognitive work is easier. Strangely enough, the subjective ease of the work has little to do with your actual relative ability at it: I've had really stressful or depressing times working in a programming job or a grad-school environment, but I would certainly say my brain is my strong-suit rather than my muscles. In contrast, if I have physical work to do and can let my mind wander a bit more, I find it very easy, if somewhat boring.