Human Senses 2. Hearing and Balance (15 of 19)

Human Senses

With our top-heavy design moving around on 2 legs is a fantastic-balancing act.
We use senses in the ear and through out the body to guide constant minute adjustments to thousands of muscles.
But there's one other vital component to our sense of balance.
We've come here to the circus centre in San Francisco to see it in action.
lts awe inspiring what these acrobats can do.
Some of these manoeuvres take years of training.
But we're about to see a stunt that will test even their sense of balance to the absolute limit They're going to perform one of the most difficult stunts in their repertoire, the human tower.
It 's going to take 4 people nerves of steel and a very strong foundation.
It 's a teamwork.

Everybody should work together.
Back strong, legs strong.
Keep stay there.
Tight right.
Stay tight, ok thank you good luck.
As each person is added to the tower the problems multiply.
If the tower is to stay standing, everyone has to stay as perfectly still and upright as possible.
It 's a hair-raising test for their sense of balance.
Every detail supplied to the brain by the sensors in the inner ear and the limbs is crucial.
But it's actually something else that's keeping Alex team standing.