New $8 Let’s get started! Using dumbbells can be a great way to workout at home or at the gym. Working out with dumbbells allows you to not only work out the exercised muscle but will also require the input from various stabilizing muscles. This will allow muscles to strengthen together and not develop independently from one another. It is important to keep proper form while completing the exercises. Be careful not to swing and use momentum to perform the exercise, therefore gaining the most effective benefits. Practice in front of a mirror to help ensure that you are using good form for the exercise. To start it is important to pick the proper weight. Start out with lower weights until you learn proper technique and build yourself up. If you’re trying to tone your muscles and build endurance, rather than significantly increase muscle size, select weights that allow you to do about 12 to 20 repetitions of a given exercise before feeling overly tired.