In this world, there are individuals who are exceptional compared to the majority of humanity, and it originates from their own bodies.
1. Separate Finger Movement

Try moving your fingers, and you'll notice something: Whenever you move your middle or ring finger, your pinky finger will automatically move along. However, there exist individuals who can move these fingers separately, and science suggests that this ability seems to be inherited.
2. Tongue to Nose
Similar to the ability of separate finger movement, about 10% of the world's population possesses a tongue long enough to touch their nose or chin. And I bet you're trying to touch your nose with your tongue right now, aren't you?

3. Contrary Body Part Movement

Try this trick to see if you're special: lift your right foot, rotate your ankle clockwise, and at the same time, use the big toe of that foot to rotate counterclockwise.
You're almost certainly unable to do it because as soon as you rotate your big toe, your entire foot will also rotate. The same thing happens when trying it with your hand.
However, a small portion of the population can do this because their brain is slightly different in design from the average person. Nevertheless, it's a skill that can be practiced and mastered.
4. Gleeking

Gleeking is a term referring to... spitting saliva out of the mouth only using the tongue. Those who can Gleek just need to push their tongue forcefully, and saliva sprays out in a stream.
This is actually a very rare ability, occurring due to the physiology of some individuals having salivary glands that produce an excessive amount of saliva. In fact, you can still 'gleek' by using lemon to produce more saliva, but it can't be compared to the few who are 'gifted' with it.
5. Sneezing with eyes open

It's always the same: every time you sneeze, you unconsciously close your eyes. The reason is that there are nerve connections between the nose and the eyes. When you sneeze, the airflow stimulates these nerves and triggers an involuntary reflex, forcing the eyes to shut.
However, there are cases where this function is faulty, causing the eyes not to close when sneezing.
6. Folding the tongue in half without using teeth

This is also one of the rare abilities, with a rate of only 1 in a million.
7. Thumb Folding

Did you know there are people who can fold their thumbs back to touch the back of their hands? This is the case of individuals with thumbs having 2 joints, known as the Hitchhiker phenomenon, allowing them to bend their thumbs backward towards the palm without causing any pain or risk.
It may seem eerie, but this is not an extremely rare phenomenon. Statistics show that about 20% - 25% of the population can do this.