Free Weights VS Machines

Free weights or machines?  Well lets start off by saying that Jack LaLanne and Nautilus, pioneers of the modern day machines used in commercial gyms and homes across the world had great intentions. Ever since machines hit the fitness scene there has always been a debate relating free weights and their counterpart. Till this day depending on who you talk to you'll get mixed emotions. The truth lies somewhere in the middle. There are many variables to take into account. Both methods have pros and cons.

I my opinion your training should primarily consist of using free weights. Free weights involve more muscle fiber recruitment to stabilizing muscles not used when exercising on machines, but that's not to say that machines don't have their place as well. The advantage with machines seems to be more relevant for bodybuilding and singling out specific muscles groups.

Generally speaking when using free weights, you are more likely to fatigue your stabilizing muscles before your prime movers. Here's when using machines takes a turn for the best. For example, lets say your squatting and your near the end of routine, switch over to leg extensions and curls to stimulate muscle fibers even further. So not only did you take advantage of using free weights for stabilizing recruitment but you were able to hit your prime movers once again. Next time you train make it a point to take advantage of both worlds.

Many factors that I'm going to give you can can play into affect during muscular development : 

1. Load (level Of Resistance) 
2. Reps
3. Training Intervals & Rest
4. Intensity 
5. Frequency
6. Calorie Intake
7. Testosterone/Estrogen Levels

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