A body will resonate if the original vibration matches the Natural frequency of the resonator.
The vocal folds of a person who speaks too high (or too low) have to work much harder to maintain a desired loudness.
This abuse to the folds leaves the door open in time for a myriad of voice disorders.
Resonance: Some vibrating objects are not the original source of the vibration. They are set in motion by some other vibrating object. Probably most people have witnessed a window that vibrates when a vehicle, maybe a truck, passes by.
What is important is that not every vehicle that passes causes the window to vibrate. Only those engines which generate sound waves that match the natural frequency of the window will start it to vibrate.
Another example is that when soldiers march across a bridge, they are told to break cadence. Otherwise, if they all happen to be stepping in time to the natural frequency of the bridge, they can cause it to resonate so violently that it will actually collapse.