We all lose 21 grams

Some days ago, I bought '21 Grams' original soundtrack composed by Gustavo Santaolalla. It's very fantastic, like the movie (directed by Alejandro Gonzalez Inarritu and starring Sean Penn, Benicio del Toro and Naomi Watts).
I suggest you to watch the movie and then find the soundtrack and listen to it. This film and its music are masterpiece.

"They say we all lose 21 grams at the exact moment of our death…
everyone.
The weight of a stack of nickels.
The weight of a chocolate bar.
The weight of a hummingbird…"