Your fingernails are relentless.
Most of us probably don’t give our fingernails a second thought. They are simply part of our bodies and part of our lives, helpful in prying open boxes, scratching an itch, undoing a Lego build, and for women, a point of pride, vanity, and even self-expression. And yet beneath its plain and unassuming exterior, fingernails actually have a pretty creepy side: their relentless, unwavering, and uncontrollable growth – sometimes as much as 2.5 millimeters per month, a speed that is capable of replacing a nail entirely in about 3 to 6 months.
No wonder you’re constantly using that nail trimmer and getting annoyed when those cuticles start to get in the way! Those fingernails are growing every minute and second of the day, often in proportion to how much you use them, which is why the fingernails on your dominant hand may be slightly longer than the ones on your other hand. Researchers have also found that your fingernails actually grow faster during the daytime and in the summer, supporting the theory that the more you use them, the faster they grow, as people are usually more active at those times and seasons.