Now, I can already here The”Bowflex” audience crying foul, but in case you really need to create the muscle density, strength and symmetry it requires to have Really Amazing Arms(TM), you just cannot get there without using free weights. Ever since weight training machines came on the scene, there has been a trend among beginning bodybuilders to feel that those stretchy cables and shiny handles must be better than clunky old dumbbells for constructing impressive arms.
Second, while free Weights permit you to control the resistance angle and range of movement during a given exercise, machines offer no such freedom of movement. By way of instance, I have done preacher curls using a system and with free weights and there is simply no comparison between those exercises concerning immunity angle and range of movement. The free weights are much superior, whether using an EZ Curl bar or dumbbells, for building biceps mass and electricity with preacher curls. The same applies to doing triceps extensions with an EZ Curl bar versus performing them on a triceps extension machine. The free weights put more resistance on the triceps and permit a greater range of movement to complete this exercise. This enhanced resistance and range of movement recruits more muscle fibers throughout every extension of their weight, which then compels the triceps to work harder and develop quicker than they will with machine extensions.
Again, I am not saying that arm training machines are completely useless when it comes to workout variety or forming motions best tricep extension machine are also very helpful for high rep workouts or advanced training with descending sets, super sets and giant sets. However, for building mass and strength on your biceps, triceps and forearms in the early stages of your training, you need to focus these efforts on working mostly with free weights. So when attempting to determine whether to use machines or free weights in your next arm construction workout, though they do not look as fancy as these shiny machines, you are better off working with the clunky old weights.