Week 11 Arm Workout days 2 &3

So I continued to paint Saturday morning for about 4 hours, and then spent all day Sunday painting. ladder climbing, brush painting, a little roller painting, and moving furniture and appliances around. The end. I felt chintzy counting it as exercise, but then my ipod lose it! app told me that 4 hours of painting burns like 450 calories. but wait, that's not that much considering it was 4 hours. I have no idea what is a lot of calories.