In the training of weight, to train to the failure is to repeat an exercise movement (like press of bank) until the point of the momentary muscular lack. Contrary to the generalized belief, this it is not the point about which the individual thinks that it cannot complete more repetitions, but the repetition in the first place that fails due to the insufficient muscular force.
Qualification for the failure is, nevertheless, a controverter subject. Those in favor of High Intensity of Training - Mike Mentzer, Arthur Jones and Darden Ellington - to advise to train to the failure in each series. But other experts think that this will take to the sobretraining, and suggest to train to the failure only in the last series of an exercise.
A recent study has demonstrated that to train to the failure with diminution of the load it can be more beneficial for the construction of muscle to use higher loads. In this study, the participants who received training in 30FAIL (that is to say, 30% of the maximum weight that could raise, and to do what many representatives who needed to go to the failure) had higher protein levels to develop muscles after 24 hours of their period of sessions that the participants formed in 90FAIL
Some doctors recommend to finish a right series of repetitions before the fault point, for example if a maximum can be done of 12 repetitions with a determined weight, only make 11.
Others to extend the formation to lack concept and repetitions slightly beyond the failure recommend to make 3-4 to put in danger the correct form with the purpose of increasing “burns it”.