Alternating bicep curls

Step 1. Starting position:

Step 2. Start standing up with dumbbells in each hand, your back straight and feet hip-width apart. Your arms should be relaxed, pointing down. Your knees should be slightly bent, your abs contracted, and your shoulders down.

Step 3. Steps:

Step 4. - Bend one arm at the elbow, bringing the dumbbell up to your shoulder. Your upper arm should remain motionless during this movement.

Step 5. - Bring the dumbbell back down until your arm is in its original relaxed position.

Step 6. - Repeat, switching arms.