Few things are as physically tiring as home improvement work. I painted every wall in our house before we moved in (including stripping wallpaper in one bathroom). DH did wood trim. We worked on it after work almost every day for a month. Parts of my body I didn't know had nerves ached. (We had others do the floor re-finishing and re-carpeting - we reached our limit.)

I would imagine the concrete floor is also COLD!!