Categoría Oddities

Why do our eyes pulsate when we are stressed?

Reader Question Lucas Jose Cruz, Pirai do Sul, PRIllustrates Marcos de LimaEdition Felipe van Deursen The exact reason is not known. The phenomenon, called myokymia, happens when the sympathetic nervous system (connected to functions such as pupil dilation and increased…

Why do boxer shorts have that name?

»> Because at the time this nickname appeared, it was considered something out of fashion – just like the samba-canção, a popular style that had its heyday in the 1940s and then declined. This slow and romantic form of samba,…

Do fish sleep?

»> All animals, including single-celled organisms, alternate between waking and resting states. But this does not mean that they sleep according to the human concept of sleep. As they do not have eyelids, fish cannot close their eyes and their…