Our bodies are truly remarkable, yet we seldom pause to appreciate the marvel of evolution they represent. While humans have evolved from primates into complex, society-building beings, our biology remains nearly identical to that of our ancestors from 20,000 years ago. Evolution is ongoing, but it occurs so gradually that we hardly notice the changes.
A great example of this slow process is the palmaris longus tendon in your wrist. This tendon, which was once vital for tree-dwelling primates, is gradually disappearing from the human body—about 10-15% of people no longer have it.
Want to check if you have it? Simply rest your forearm palm-up, touch your pinky to your thumb, and lift your hand slightly. If a tendon appears in the middle of your wrist, you have it; if not, you’re among those evolving away from it.
Did you find yours?
