Olympic wrestlers beware, Sudan's fighting giants are coming

The walls are lined with spectators as the sun hangs low in the sky. It is 5.30pm on a Friday at the wrestling arena in Hajj Yousif, Khartoum, Sudan and the air is thick with anticipation as two wrestlers circle one another at the center of the sand-filled ring -- bowed forward, with their eyes locked and foreheads just millimeters from touching.