Strength is a damage-dealing Normal-type move. It is HM04.
Strength inflicts damage and has no secondary effect.
Outside of battle
Players can move round boulders around the field by walking into them whilst Strength is active. Many puzzles in the game require boulders to be moved around in a certain way with Strength. If the area is left, the boulders will resume their original positions and the puzzle needs to be solved again if the player wishes to go back through the area. However, the boulders will not reset after being dropped from one floor to the floor below.
The target is slugged with a punch thrown at maximum power. It can also be used to move heavy boulders.