Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

今天（31日）是大年初三「赤口日」，虽然相传这一天属于赤狗神当值，而赤狗神代表口舌是非、争吵与不吉之事，于是传统上不适合拜年或探亲，避免与外界有过多互动而无意间惹上麻烦，与人发生冲突影响整年运势。不过时移势易，现今不少人仍然四出拜年，又或者攻打四方城 ...