It's important to have short and clean fingernails if you are planning to use your fingers during sex. Long nails are not only unpleasant, but they are also places where STIs can hide. Not every man likes having someone's finger in his anus. That's often because the other person has too long fingernails. That will prevent you from causing him discomfort and pain. It will also keep you from damaging the mucous membrane of his anus or rectum with your nails.
Age and sex variation in lipid composition of human fingernail plates
Alpha-keratin of nails is formed of fibrillar keratins and globular keratin associated proteins. Nail clippings were collected from 78 healthy volunteers 46 females and 32 males; mean age of The NMR spectra were deconvoluted into separate signals, the areas of which were then subjected to statistical analyses: cluster analysis, principal component analysis and tests for unpaired groups. With regard to the amino acid composition of the nail proteins, males have more Leu and Ala, and less Cys, Arg and Ile, than females.
The queer internet has been abuzz about one topic lately. And while everyone has a lot to say about acrylic nails and queer sex, no one is really giving any guidance on how to successfully do it with long AF nails. There was this predisposition that femmes who rocked these nails were all pillow princesses or consistently bottoms. All of this is simply incorrect.