zu

im back on tumblr!

wrinklefucker:

godtie:

fun fact: if a persons body odor smells good to you that means they have an immune system basically opposite of yours! this happens so the chances of finding a mate with the opposite immune system is greater and the chances that any offspring you produce together will have a stronger immune system is greater.

this is fascinating

sources! 

(via allisynth-the-great)