Under Armour Releases Latest Ad Starring Michael Phelps

BALTIMORE (WJZ) -- Under Armour releases its latest ad, showing a new side of Baltimore-native, Olympian Michael Phelps.

The commercial gives an inside look at the 30-year-old's intense training regimen.

Phelps is preparing for what will be his last Olympics--the 2016 Rio Games.

The ad is part of Under Armour's new "Rule Yourself" campaign.