Alternate Biceps Curl

Notes:
Keep elbows close to your ribs and stop any shoulder movement. This ensures that any lifting is done completely by the bicep.

Movement:

Stand with feet shoulder width apart, knees slightly bent.
Hold dumbbells so that arms are by your side and palms are facing inward.
Slowly curl one dumbbell, rotating palm upwards you as you raise it.
Slowly lower back to starting position.

Variations:

There are many possible variations for this movement. For instance, you can perform the exercise sitting down on a bench with or without back support and you can also perform it using both arms at the same time. Additionally, you may perform it with a starting position in which both palms are facing forward. In this case, you may alternate the arms as well, or perform at the same time.
You can also do the exercise starting with both palms of the hands facing the torso and then rotating forward as the movement is performed. At the top of the movement the palms should face forward and the small finger should be higher than the thumb for a peak contraction.

Just like the Dumbbell Biceps Curl except you alternate each hand, curling one dumbbell at a time.