I think I'm "fine on 6 hours" but analyze: what's my actual sleep debt? Calculate my sleep deficit: if I need 7.5 hours but get 6, that's 10.5 hours deficit per week. Map the debt accumulation: show me my sleep debt over 1 month, 6 months, 1 year. Give me the repayment plan: this is how long to catch up on X hours of debt. Show me the cognitive cost: what's this debt costing me in performance, mood, health. Include: whether I'm actually functioning well or just adapted to impairment, how to calculate true sleep need, and what repaying sleep debt actually requires.