Body position is important for defensive players.
There is are a few fundamental concepts, as well as a few different locations on the ice to be aware of.
If you were coached as a youth, you heard this. It means to maintain your body position on the side of the attacking player closest to the net- “D-Side”. This is one of the most important fundamentals of good defensive hockey in any position on the ice (including wingers) in the defensive zone.
“Stick on Stick, Body on Body”
When defending a rush, or engaging a player with the puck in the defensive zone, a common mistake is to lunge or dive at the puck. Instead, your body should remain centered on the puck carrier’s body, “body on body”. Your stick is free to try to poke the puck “stick on stick”, but not if it pulls your body out of position.