during your period.. myths, can't wash hair? can't eat cold foods? Options

[m&m]

my mum has like all these theories and stories bout .. periods. she's chinese and gets all these stories from china from, her mum who got it from her own mum and so on.. she's really .. stingy and gets pissed when i wash my hair. she says "you will get bags and dark circles under your eyes if u wash ur hair wen u have ur period"
im like as if! i take her to the doctors and they say its not true but she wont belive a word they say.

and also another story i heard.. cramps are caused from eating/drinking cold foods. i drank cold ribena 2day and jus had the worse cramps. the other day it was iced water.. >< nearly died from the pain. is it jus coincidence? or is it really the coldness causing it.

[SoaDyPOP]

i believe in that one about having the same cycle as girls you're around a lot cos my friend emily & i could never predict our schedules, but from august til now, we've been together almost every day and we've been getting our periods on the same exact day for about the past 3 months. i just confused myself. we don't start on the same day every month, but we start on the same day as eachother. so like she'll call me and tell me she started her period then a few hours later, mine will show up. it's ca-razy!