Fitness experts believe that free weights provide a more complete workout as compared with machines. However, they also need more expertise in their use. When you’re lifting free weights like barbells, not only is the prime mover being worked but also all the muscles responsible for stabilising the joint. The result is an increased strength of the stabiliser muscles. When using free weights, whenever they are raised over the head, it is important to enlist the help of a spotter. Improper technique can result in injury to the user or bystander if you drop the weights.