And doing 5 exercises, but all on your chest and none on your back, would be a huge waste of time, for example.
It depends on what you're doing; 5 on the legs sounds like overkill, since there's only two exercises truly sufficient. Actually same goes for upper body, but an argument can be made for 3 sufficient ones there.
Fitness Minutes: (112,042)
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It depends on what your goals are? And what you mean by right? As long as you are overloading your muscles you will see some progress, but don't feel as though you must stick with machines. Free weight offer a whole different array of challenges for your body, too.
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