The key to balancing on a tightrope is to lower the body’s center of gravity toward the wire. Just as it’s harder to topple a stout vase than a tall slim one, a human is less likely to fall if the bulk of their mass is closer to the ground—or, in this case, the wire.
Read more: http://www.smithsonianmag.com/science-nature/what-happens-your-body-when-you-walk-tightrope-180956897/#D9zi4WVP2MQKDMl1.99
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