The Workout Gear Celebs (and Editors) Love

When Ashley Greene, Heidi Klum, Kate Hudson and PeopleStyleWatch.com editors break a sweat, this is the gear they prefer to do it in

UNDER ARMOUR COLDGEAR TOP

A bunch of pro athletes (including Lindsay Vonn) – and editors here – rely on this collection to stay warm when it's really freaking cold out. The pieces were inspired by the ceramic coating on military planes, and they help you retain body heat. Now you have no excuse not to go on that outdoor run in January (sorry).