Durability

Durability is the property which guarantees the ability to withstand a certain amount of force. This is not to be confused with endurance; while durability is the ability to withstand damage, endurance is a measure of stamina.

Logically, characters capable of physically achieving a certain degree of energy output, must be able to at least withstand a comparable amount of damage, or their bodies would break apart from the strain and automatic counterforce, whenever they exert themselves.