This happened when I was young and went to the swimming pool with my friends. The water depth where we played was 3 meters.
My friend told me to go into the water.
Another friend told me that if I just stayed still, I would float. He was thinking about lying still.
I decided to give it a try.
I went into the water.
I let go of the ladder.
My body slowly sank into an upright position.
My body continued to sink. My friends felt something strange.
One friend yelled at another to pull me out of the water, and the other friend stretched out his arm and pulled me out.
My friend asked me if I was okay.
Since it wasn't long, I said I was still fine. Then I asked my friend.
"I was still, why didn't I float in the water?"