Many people, when they start lifting weights, believe that training to failure on every set of every exercise is the key to growth. This is one of the biggest weightlifting myths, and one that is nearly impossible to squash unless you educate yourself on exercise physiology.
What Exactly is Failure?
Failure is weightlifting is defined as the inability to generate the force required to complete the full range of motion for a single repetition. Many people, experts and trainees, fall on both sides of this debate. Some coaches insist on leaving a couple reps in the bag, stopping well short of failure to avoid stressing the central nervous system (CNS), while others recommend taking each set to that last rep. In order to get to the bottom of it, we really have to examine the science behind the theory.