sentence: People usually sweat during sleep, so futons absorb sweat and collect moisture.
sentences_before: Futons are generally used with a futon cover, because these make it easy to keep the futon clean. People generally use futons so they can sleep comfortably, stay warm and support their bodies while asleep.
sentences_after: Futons have to be hung out in sunlight to keep them dry, this is called 'futon-hoshi'. If this is not done, ticks and mold could grow on the futon and it will become dirty and insanitary. Futons need to be looked after properly.
concept_name: People
headings: Futon Types of futon
categories: Japanese culture Furniture