‘Body Position’ is not a static concept. It’s dynamic and swimmers...

Pressing the ‘T’ is a common suggestion in freestyle for effective body position, and while it’s not wrong, it’s incomplete.
Here’s a simple, introductory option for helping swimmers learn this skill.
From a floating position, have them move their arms up and down like performing a jumping jack.
Body position is a dynamic skill, and swimmers must be able to maintain effective position at high speed.
Just about anyone can do it.
Achieving high stroke length at high stroke rates is very hard, and very few swimmers can do it.
But it’s what’s required if swimmers want to go fast, especially over shorter races.