free weight advantages:
- they incorporate the stabilizing muscles that enable you to perform the movements you choose to make and may be more effective in producing overall muscle strength
- the exercises tend to more closely match the movement patterns you are likely to need for specific sports
- free weights are more versatile; you can do a wider variety of exercises with a simple set of dumbbells
- they are inexpensive and portable and take up little space
- you must learn to balance the weight while exerting force which can be difficult and dangerous to do especially if you are lifting them over your head
- the isolation of specific muscles can be difficult to achieve and requires a precise technique
- training alone can lead to injury if you are not careful
- they are generally safer and easier to use especially for beginners
- some machines are more efficient than free weights in isolating a specific muscle group
- machines ensure correct movements for a lift which helps prevent cheating when you get tired
- these workouts may take less time because you can move from machine to machine easily
- most machines involve moving a weight along a predetermined path, making it difficult to strengthen the core muscles
- machines are more limited, most only allow one exercise
- most machines target an average sized person, so if you are taller or shorter than average you may find problems adjusting the machine