2-Minute Warning: Nicole 'Snooki' Polizzi

CHICAGO -- You know her best from her days on MTV's "Jersey Shore." But now Nicole "Snooki" Polizzi is turning her life around.

The days of non-stop partying may be over, but she's filling the void with dancing, back flips and... zombie hunting? You'll see what we mean when Snooki challenges Ryan in the 2 Minute Warning!

For the latest on Nicole, follow her on Twitter @Snooki.