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Grip the bar/handle at shoulder width, shoulders down and back, core braced.
1. Stand tall, dumbbells at your sides, palms facing your body.
2. Curl the dumbbells up keeping the neutral grip.
3. Lower under control to full extension.
Exhale as you pull, inhale as you return to the start under control.
Using momentum to yank the weight, shrugging instead of pulling with the back.
Keep the spine neutral throughout; do not let the lower back round to complete the rep.
Beginner: Use lighter weight, alternate arms.
Intermediate: Both arms together.
Advanced: Add a pause at the top of each rep.