Working Non Stop

Riddle: I work very hard and never stop. When I stop, life is death. Who am I?

Answer: Your Heart. It has to work hard to pump blood to all parts of your body!

Source: https://www.riddles.com/10388

I work very hard and never stop. When I stop, life is death. Who am I? — Working Non Stop by SarvRiddles 235 v1.

Riddle: I work very hard and never stop. When I stop, life is death. Who am I? Answer: Your Heart. It has to work hard to pump blood to all parts of your body! — by SarvRiddles 235 v2.