There are different variations to this fitness workout. You can do the arms at the same time, or one after the other. I like the one at a time technique because you can focus on it. Now, as opposed to a regular curl, you are not going to rotate your twist up to the sky. With the hammer curl personal trainer fitness workout, you are focusing more on the width of your biceps in your forearm.
To do this, you will start as the regular dumbbells curls fitness workout with the hands at your side and a good base. Keep your feet shoulder-width apart with your knees loose. As you lift your arm, you can go straight up, or you can come across your body. Make sure you control the movement, do not do it hastily. It is very crucial to get the bicep squeezed for about two seconds. Throwing the weights is a mistake because it will not help you build any bicep muscle. Breathing is also very crucial during this exercise. As you move the arm up, breathe out, squeeze release, and then breathe in.