Golf isn't just physical work. It's hours of aim → calculate → align → swing → evaluate → correct → repeat. That's real attention load, and it fatigues like muscle does.
Nervous-system recovery looks unproductive on purpose: quiet walks, music, breathing, time off screens, dinner with people you like, real sleep — and periods of genuinely not analyzing your swing. The full off day means no analyzer, no "just 20 wedges," no secret garage driver session. Off means off. That's what makes on work.