Dumbbell Cross Curls work the biceps while incorporating a slight rotational movement to engage the forearms and inner bicep. Hold a dumbbell in each hand, palms facing in. Curl one dumbbell across your body toward the opposite shoulder while keeping the elbow close to your torso, then lower with control and alternate sides. This exercise builds balanced bicep strength and arm definition. Gymcheq emphasizes controlled motion and proper posture for safe and effective results.