How will you explain the sudden boost of energy, increased strength to lift very heavy objects during emergency situations

The sudden boost of energy during emergency situations originates from an adrenaline rush. Adrenaline, a stress hormone, causes the body to either flee or fight when faced with a life-threatening situation, but can also cause one to lift huge objects with ease should it be required. An example of this is if an exit to a fire in a house is blocked by a couch, you could lift it with no difficulty.