Another common mistake people make is not getting the muscle priorities right

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Generally the largest body parts are trained first down to the smallest body parts last. Always train the chest and shoulders before triceps and the back before the biceps to reduce loss of arm strength in the heavy chest, shoulders and back workout . The exception to this rule is an example when an arm muscle, such as the biceps needs strengthening or specific focus; in that case it should be trained first when energy and strength are highest to maximise muscular hypertrophy . The back should be trained then on a separate day .