to understand repetitions and to apply the right number

[Aing 1969]

Having said that for muscled exercise it is good of repetitions.1285 Muscle Neurological and metabolic continuum refers to the amount of weight you lift related to one repetition maximum and this determines how much tension the muscle is producing. Muscles exercise research shows that the level of strain you put on yours muscle is fundamental for achieving the desired results and build strength.http://www.strongmenmuscle.com/1285-muscle/