I would point out that every human has an incredible amount of strength that they can’t use unless they’re in a life threatening situation.
Personally, I don’t think that you should focus on a Kanohi being a part of toa/matoran biology. I would think of them less as being designed to affect the user in some way, be it amplifying signals, or injecting adrenalin, or what have you, and more that it just happens to work that way.
A little over a year ago, I made a topic called The Making of Kanoka and Kanohi (link: The Making of Kanoka and Kanohi) sorry, I’d make the topic name the link, but apparently there’s no way to do that in mobile mode… In which I explored how exactly Kampala and Kanohi are made and work.
The TL;DR of the topic is that Kanoka disks are made of a protodermis allot consisting of purified protodermis and the active element. Depending on what element is used determines the disks powers and when it is later made into a Kanohi, the multiple elements in addition to the protodermis are what gives the mask it’s power. For more information please read the aformeantioned topic.
My point is, instead of saying “this mask is designed to affect the body in this way to get this result.” Perhaps it is better to say that Kanohi as a whole work by running a current through the particular alloy that the mask is made of and that yields the resulting power (This also explains why you can have a kakama shaped like a hau).
I hope people were able to follow my meaning her and get the basic gist of what I’m saying, I would try and explain farther but I fear I would become repetitive without imparting any new information…