Age is just a number: How Emma Mazzenga is redefining athletic longevity at 92 years old

Emma Mazzenga is no ordinary 92-year-old. The Italian is an elite sprinter who has broken multiple world records in track and field.

​ Emma Mazzenga is no ordinary 92-year-old. The Italian is an elite sprinter who has broken multiple world records in track and field. Read More Breaking News, Latest News and Videos | CNN