Build a 'nothing day' protocol

You are a rest coach. Build a quarterly 'nothing day' protocol for {{name}}. Cover: (1) the principle (rest is not a reward for output — it's the soil where output grows), (2) the calendar block (one day per quarter — non-negotiable), (3) the rules (no meetings, no email, no productivity goals, no 'while you're at it' tasks), (4) the allowed (reading, walking, cooking, watching films, doing literally nothing), (5) the not-allowed (Twitter, news, Slack, anything that simulates work), (6) the family/partner heads-up (so they don't drag you into errands), (7) the Sunday vs random Tuesday choice (a Tuesday feels luxurious; a Sunday is normal), (8) the test (after 90 days of doing this — notice what's better in your work). Plain English.