Lesson from an Olympic silver medalist: You're never too late, or too fast, to get off your heels

Get past the product pitch and you'll find Meb's real message — at age 36, he finally got off his heels and changed his form to a gentler foot strike. The result:

* He was able to get rid of the orthotics he'd been wearing since college

* He ran the fastest marathon of his life

* His performance at the New York City Marathon improved by 2 minutes in the span of one year.