If you can do these things, you are among the unique people

 About a third of all people can raise one eyebrow: left or right. It’s a great way to send a playful signal to someone while telling a joke. But the ability to raise both eyebrows separately is much rarer. If you’re not among them, that’s because you cannot yet control and move the corresponding muscles. But this skill can be developed. Stand in front of a mirror, hold one eyebrow with your hand and lift the other up and down. And then do the same with the other eyebrow. This will help you learn moving them separately.