Weighted Round Arm

Stand with your feet shoulder-width apart and hold a dumbbell in each hand.

Bend your knees slightly and hinge forward at the hips, keeping your back straight.

Raise your arms out to the sides, keeping a slight bend in your elbows.

Continue lifting your arms until they are parallel to the ground.

Pause for a moment at the top, then slowly lower your arms back down to the starting position.

Repeat for the desired number of repetitions.

Losing tension in the core or lower back partway through the movement — because Weighted Round Arm loads multiple joints at once, a small breakdown in bracing at the hips or spine compounds through the whole chain.

Locking out too fast or letting the elbows drift outward under load — controlling the eccentric (lowering) phase is where most of the muscle-building stimulus happens.

Skipping a warm-up set at lighter load/intensity — even "beginner" exercises benefit from a rehearsal set to groove the movement pattern before working sets.