One of the most contentious issues in bodybuilding: which is better, free weights or gym equipment? The fact is that free weights and exercise machines perform several different tasks. The best option for everyone: look into the matter and correctly applied both in their training.
The position of the body when working with free weights is not fixed, that allows feeling the consistency of the work of muscles. Take a few squats with barbell, and you will feel instantly a kind of relationship between body and mind.
Free weights are more effective to increase the power performance. The absence of a fixed position (as at the gym equipment), enables the work of the synergist muscles, which help target muscles to lift the weight. As a result, the body operates as a single interlocking mechanism.
Free weights require stabilization of the body during lifting weights; in other word in work are included muscle-stabilizers. This means that some of the exercises help to work at many small muscles in one set.