Hidden Physical Strength

Our internal mental lock prevents us from accessing 100% of our physical strength. That's why you can't rip off your own finger without some kind of outside assistance. But in extreme situations, such as when protecting a loved one, the primal part of our brain can override this limit and allow us to perform seemingly impossible feats of strength. The consequences of using 100% of our strength, on the other hand, can be physically damaging, as the primary goal of this lock is to prevent tearing your muscles, breaking your bones, and damaging your body in the process.