1. The differences between shod and unshod running have evolutionary underpinnings.

2. He, too, leaned back, wiggling his unshod toes before the coals.

3. The unshod runners' style causes more flex in the foot's springlike arch ankle and knee and engages more foot and calf muscles blunting the impact on the body and making for a more comfortable "ride."

4. He and colleagues looked at more than 200 shod and unshod runners in the United States and the Rift Valley Province of Kenya, which is known for its great endurance runners.

5. Indeed, many mountaineers, including Everest conquerors Sir Edmund Hillary and Tenzing Norgay, reported unshod footprints far larger than human feet dotting snowy trails.

6. And his name shall be called in Israel, the house of the unshod .