Were These Native Americans Real-Life "Super Men"?

When I was in Arizona getting ready to climb Humphreys Peak, I did some research on Native Americans.
Back in the old West, Native Americans enjoyed a kind of power and vigor that is hard for us to understand or believe.
Cabeza de Vaca, one of the first Europeans to explore what is now Texas and the Southwest in the 16th century, lived among the Native Americans for eight years.
He observed, “One Native American ran down a buffalo on foot and killed it with his knife as he ran by its side.”…