What are the extra lace holes on running shoes for? We’re here to unravel the mystery and teach you how to tie a heel lock to secure your feet and ankles on the trail.

NEW YORK — Anastassia Khozissova doesn't just walk in high heels. She glides. She looks graceful and sexy at the same time, not missing a beat, not teetering even a little bit. But she's a model so ...