As someone who has been in a scenario in which my adrenaline surged in a life or death situation but failed to lift something heavy: your muscles are not magically going to give you extra fibres you dont have.
My exact scenario: working as a glazier, and a slate of glass vertically landed on a workmates foot, another guy managed to pick up the corner of the slate with his hands. Failure to lift the glass would split the glass and result in a guillotine of 3mm float.
Despite my best effort I could not lift the corner of the slate using a suction grip.