Conjoined twins Abby and Brittany reveal how they are conjoined

Abby and Brittany Hensel, conjoined twins who shot to fame on decades ago, have finally revealed how their partially-shared body works.

The twins, 34, were born with dicephalic parapagus, where two heads are attached to a single body, with each twin having her own brain, heart, and other organs.

Their two brains and nervous systems are perfectly coordinated. They can write, eat, run, and drive a car, acting both independently and in perfect sync.

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