If you want to rock a bralette, work your tummy.
AT HOME: Hold a “mini” sit-up, lifting only your shoulder blades off the floor; hold for 30 seconds, and do this three times.
AT WORK: “Have you ever noticed how Ellen DeGeneres sits down on her talk show?” asks Ingber. She holds the arms of the chair while keeping her knees lifted for a few seconds, then lowers herself slowly into the chair. “This is a great ab exercise.” Halfpapp also suggests this seated exercise: Lift one leg straight out in front of you and pulse it 10 times, then switch legs. “Keep your lower back pressed into the back of the chair. That will engage and stabilize your abdominals.”
AT PLAY: Mimic the same chair moves while in the pool, says Halfpapp. Put on a pair of flippers, then prop your elbows on the ledge of the pool (as you would put them on armrests). The flippers increase water resistance, which helps tighten your core.
Lisa Hannam is Glow's Health Editor.