How hard do you need to exercise to gain muscle?

The prevailing opinion is that the one who exercises until exhaustion gets the best results. But is that the case? Not really...

Getting and shaping muscles is not just exercise, it's real science. Exercising to the point of exhaustion is not going to bring you results in the beginning, but in the long run, it is not a good idea.

Why? Jeremy will explain it to you best.