Christopher McDougall

The 'Tarahumara' use their legs 'as designed.' By running at a young age with minimal footwear, they naturally develop the best biomechanical use of their legs. Cushioned shoes restrict foot movements and allow for over-striding. Short strides are natural.

Endurance, after all, is the only reason we even exist. We think of ourselves as nature's deadliest animals, but the truth is, a naked human is the biggest wimp in the wild. We have no fangs, no claws, no strength, and no speed.

I think what's going to hurt the Republicans enormously is the extremist position of Mitt Romney on the immigration issue and states like New Mexico, states like Colorado, Nevada, Arizona - and I think it's going to be the margin of victory for President Obama, a very narrow victory.