Who doesn't have 12 minutes to get sculpted arms and a toned core? Fitness trainer Amy Rosoff Davis [1], who has gotten celebrities like Selena Gomez [2] in top shape, is in the studio. Get fit with her at home in less time than it takes to pack your gym bag! Grab a mat and follow along with this low-impact workout, no equipment needed.

On Amy: Good hYouman tank [3], Under Armour tights [4], Adidas shoes [5]

On Tarra: Alo Yoga [6] outfit and APL [7] shoes

On Meagan: Electric and Rose top [8], Lolë tights [9], and APL [10] shoes