Lie faceup, hands behind head, elbows out. Lift shoulder blades and left leg about 6 inches off floor as you bring right knee toward chest and twist torso toward right knee. Make it harder: Hold a 3- to 6-pound medicine ball at chest (as shown). Switch sides, twisting torso to bent left knee for one rep. Continue alternating in a pedaling motion.
Works: Abs and Obliques
Kneel on right knee with arms overhead and leaning toward left, left leg extended out to side, foot on ground (as shown). Shift to right, placing right hand on ground to support upper body, as you raise left leg level with hip, foot flexed. Return to start. Do 15 reps. Switch sides; repeat.
Hold a plank with feet on medicine ball, hands on ground (as shown). Keeping left foot on ball, bring right knee toward chest, then kick right leg out to side. Return to start; repeat on opposite side for 1 rep. Continue for 45 seconds. Rest 15 seconds.
Works: Shoulders, Arms, Abs, Obliques
Crouch, placing hands shoulder-width apart on ground; hop feet behind you and to left into a plank, toes together (as shown). Hop feet back up to hands and jump, raising arms overhead. Repeat on opposite side. Continue for 1 minute.
Works: Shoulders, Arms, Abs, Obliques, Butt, and Legs
Stand with feet hip-width apart, arms above head, palms pressed together, elbows out. Lean to right (as shown), pushing left hip out, until you feel your obliques and back engage. Return to start; repeat on opposite side for 1 rep. Do 12 reps.
67% better than a crunch at activating your lats, which pull in your waistline.
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