This targeted exercise is specifically designed to strengthen and define your triceps, the muscles on the underside of your arm between the elbow and the shoulder. If you want to banish wobbly underarms, this is the move for you.

Sit with your feet flat on the floor in front of you and knees slightly bent. Lean back slightly and place your hands on the floor behind your hips, fingers pointing toward your toes. Elevate the hips by engaging the core, hamstrings, and glutes.

Bend your elbows, lowering your hips until they’re just above the floor. Don’t let your elbows flare out. Imagine squeezing your elbows together as you lower your hips. Extend your arms, bringing your hips back up to starting position.