I spend that time mostly on the sofa, or in front of a whiteboard. Or sometimes a live brainstorming. Typing code is actually relaxing. What looks like relaxing is actually hard thinking.
I try to explain this to my family (currently in a pure remote job) but it is difficult to make the case persuasively. Honestly tempted to start recording voice memos to self to capture the ideas for next steps, which I can run five of in tmux if i keep the directories straight.