Core · Beginner

Russian Twist

Obliques · also Abs

Equipment: Dumbbell, Mat

How to do it

• Sit with knees bent, heels on the floor, dumbbell at your chest
• Lean back to about 45 degrees with a long, straight spine
• Brace your abs and keep your chest lifted
• Rotate your ribs to one side, moving the dumbbell with you
• Turn back through center and rotate to the other side

Common mistake

✕ ROUNDED LOWER BACK → ✓ CHEST UP, SPINE LONG

Starting point: 3 sets × 10–12 per side, 45s rest.

In the app: rotate the 3D model, slow it down and watch the mistake next to the correct form.

Cues checked against: nasm.org, health.uconn.edu.