“If you touched dog poo in the street， you'd want to wash your hands，“ said Tierno. “Consider that analogous to your bedding. If you saw what was there — but of course you don’t see it — after a while you have to say to yourself， ‘Do I want to sleep in that?’。
良好的睡眠离不开一个舒适的床，而床上用品也是格外重要的，床单和被罩是会与我们人体直接接触的，干净又舒适的床单被罩才会提高睡眠质量。不少人觉得床上用品应该频繁清洗才能保证卫生，也有的人认为如果看起来不是很脏，就不用洗。
