The move: One-Legged Lateral Raise

Works on: Targets middle shoulders and core muscles.

Michael Owen Baker/Los Angeles Daily News (ENLARGE)
Trainer Kathy Kaehler does the first step in the One-Legged Lateral Raise, lifting one knee as high as possible without leaning forward or backward.
Michael Owen Baker/Los Angeles Daily News (ENLARGE)
Kaehler raises her arms to form a 'T,' engaging the upper body in the exercise.
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Setup: Holding some light weights, stand with your arms by your sides, palms facing in, chest lifted and belly button pulled in.

Step 1: Keeping your right knee slightly bent and your torso upright, exhale as you lift your left knee up as high as you can without leaning forward or back.

Step 2: Hold this position by pulling your belly button in toward your spine. Keeping your elbows slightly bent, exhale as you slowly raise your arms directly out to your sides up to shoulder height so your body forms a "T." Don't lock your elbows at the top of the lift. Inhale as you slowly lower your arms back down to starting position, keeping your left knee lifted.

Repetitions: Do this 10 times.

Kathy Kaehler is NBC's "Today" show fitness expert and has worked with many celebrities including Julia Roberts, Jennifer Aniston, Cindy Crawford and Michelle Pfeiffer.

— Los Angeles Daily News