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Comment by AlbertoGP
Interesting read: “Now, it’s not that training to failure is a complete waste of effort. Some research finds training to failure does increase muscle growth compared to the same amount of sets not taken to failure. The benefit seems to simply be the result of the extra reps you do, as completing the same repetition volume by adding more submaximal sets can achieve the same amount of muscle growth. And there is a big cost to the beneficial effect of training to failure. Training to failure greatly increases the amount of fatigue you induce and the subsequent recovery time your muscles need.”