What is the meaning substitution in physical education?

In physical education, substitution refers to the replacement of one player with another during a game or activity. This is done for a variety of reasons, including:

* Injury: A player is injured and needs to be replaced.

* Fatigue: A player is tired and needs a rest.

* Tactical reasons: A coach might substitute a player to change the team's strategy or to counter an opponent's play.

* Skill-based needs: A player may be substituted to bring in a player with a specific skillset needed for a particular situation in the game.

* Fair play and equal opportunity: Rotating players ensures everyone gets equal playing time, especially in youth sports or recreational activities.

Essentially, substitution allows for a more fluid and effective game or activity while ensuring player safety and well-being, and sometimes tactical advantage.