By Kim Peiffer
Mar 07, 2016 @ 4:00 pm
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Scarlett Johansson looks phenomenal in strapless gowns (or any gown, for that matter), and there's a legitimate reason for that: Enter her trainer Don Saladino, owner of Drive 495 in New York City. Saladino has been whipping the star into red carpet ready shape for years, so we brought him into our studio to show us the ultimate move to sculpt arms like ScarJo's. Above, learn how to do the bear crawl—a full body move that elevates the heart rate while sculpting aways the arms, back, and more.

Get the look featured on InStyle editor Kim Peiffer (above): Underarmour top,; Lululemon leggings, similar styles at; Adidas shoes,