If there was ever a reason to work out, spring’s unforgiving silhouettes would be it. Many of the coveted pieces feature crop tops and cutouts. And sure, Mother Nature is a tease, but that brief bout of warm weather serves as a reminder that bundling our bodies under formless sweaters and puffy coats won’t be an option for long. Here, supers Rosie Huntington-Whiteley, Izabel Goulart, and Toni Garrn show you how to sweat it out, strengthen your core, and stretch upside down just in time for the midriff-baring months ahead.
—Amber Kallor, Style.com
