Ever noticed how sporting teams has success over a long period of time? The players change but the results stays them same. They have a great system. How does that relate to exercise?
If you go into gym and just do a series of random trainings, then that'S what your results will be ... random. However if you follow your plan or 'system' that has the basic body movements of pushing, pulling, squatting and hinging or 'old school' training your results wil not be random. They will be awesome.
Old school methods have stood the test of time. Always include them in your trainings.
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