Sedentary is relative. If it's nice out, I could spend hours outside working on my plants, and really only need to wash off my arms at the end. I'm up and moving, but it's not enough to make me sweaty and gross. I would still refer to it as sedentary, because I didn't leave the house, and didn't engage in rigorous physical exercise, but it's not like I sat on the couch and ate chips all day.