{"conversations": [{"from": "user", "value": "El caf\u00e8 et fa dormir de veritat?"}, {"from": "assistant", "value": "S\u00ed, perqu\u00e8 hi ha cafe\u00efna."}, {"from": "user", "value": "Per qu\u00e8 la cafe\u00efna et fa dormir?"}, {"from": "assistant", "value": "La cafe\u00efna cafe\u00efnada, que estimula el sistema nervi\u00f3s central, fa que el cervell es concentri i se senti menys son, i estimula l'adrenalina, i augmenta el ritme card\u00edac i el ritme, per tant incrementa el rendiment en el mercat laboral."}, {"from": "user", "value": "Com estimula el sistema nervi\u00f3s central?"}, {"from": "assistant", "value": ""}]}