{"version":"1.0","type":"card","id":"0f12a923-c78e-4842-956c-31434f9db4af","url":"https://stacklist.com/card/0f12a923-c78e-4842-956c-31434f9db4af","title":"Caffeine Plus a 15-Minute Nap Beats Either Alone","source_url":"https://pubmed.ncbi.nlm.nih.gov/9401427/","note":"Loughborough sleep lab study: 200mg caffeine taken right before a short nap cut sleepy-driving incidents far more than caffeine alone. The classic caffeine nap evidence.","image":{"url":"https://ucarecdn.com/af81e066-56c9-4c64-a4e8-ad029dc56c7c/","alt":"Caffeine Plus a 15-Minute Nap Beats Either Alone","width":1440,"height":810},"stack":{"id":"f2eedf5e-26d1-4fb4-9246-f3b127aed0e5","title":"Built for the Graveyard Shift: LSC100 + Night Shift, Gaming & Gym Energy","url":"https://stacklist.com/c/wellness/stack/f2eedf5e-26d1-4fb4-9246-f3b127aed0e5"},"created_at":"2026-11-02T15:20:55.621Z","updated_at":null,"aco":{"summary":"Caffeine combined with a 15-minute nap during a 30-minute break significantly reduces driving incidents in sleepy drivers compared to either treatment alone. The combined treatment reduced incidents to 9% of placebo levels versus 34% for caffeine alone during a 2-hour monotonous afternoon drive simulation.","tags":["caffeine","napping","driver-fatigue","sleepiness","car-simulator","alertness","sleep-research"],"key_entities":[{"name":"caffeine","type":"concept","confidence":0.99},{"name":"napping","type":"concept","confidence":0.98},{"name":"driver sleepiness","type":"concept","confidence":0.97},{"name":"car simulator","type":"technology","confidence":0.95},{"name":"electroencephalography","type":"concept","confidence":0.92},{"name":"central nervous system stimulants","type":"concept","confidence":0.9}],"classification":"reference","language":"en","confidence":0.85,"provenance":{"model":"claude-haiku-4-5","tool":"@stacklist/mcp-server@2.0.0","confidence":0.85,"timestamp":"2026-11-02T15:21:00.550Z"},"token_counts":{"approximate":572,"cl100k":463},"content_hash":"sha256:a0406a58a5d4e0b573271013aa37ceaf9ed387b23f1f48f612891a92fddfc7fa","acp_version":"0.2","body_available":true,"body_tokens":572,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/0f12a923-c78e-4842-956c-31434f9db4af.json","html":"https://stacklist.com/card/0f12a923-c78e-4842-956c-31434f9db4af","md":"/api/public/card/0f12a923-c78e-4842-956c-31434f9db4af.md","stack_json":"/api/public/stack/f2eedf5e-26d1-4fb4-9246-f3b127aed0e5.json"}}