Human evolution is still ongoing, even if it happens too slowly to notice. One subtle example is a wrist tendon linked to the palmaris longus muscle, which 10\u201315% of people no longer have.<\/p>\n
This muscle is important for animals like monkeys that rely on their forearms to move, but ground-dwelling apes \u2014 and now humans \u2014 have gradually lost its function. While nearly 90% of people still have the tendon, it\u2019s slowly being phased out through evolution.<\/p>\n
You can check if you have it by placing your palm up, touching your thumb to your pinky, and lifting your hand slightly. A visible band in the center of your wrist means the tendon is present; if not, you may be among those who\u2019ve already lost it.<\/p>\n