Choice of Words: Joyful means full of joy or happiness, hearts are the organs that pump blood, beat means to make a regular sound, fast means moving quickly.
Alternative Expressions
Happy hearts pump quickly.
Meaning: When we're happy, our hearts work harder and pump blood faster.
Choice of Words: **Happy:** feeling or showing pleasure or contentment
**Pump:** to move (a liquid) by pressure
**Quickly:** at a fast pace
Hearts filled with joy race.
Meaning: When our hearts are filled with joy, they beat very fast.
Choice of Words: **Filled with joy:** very happy
**Race:** to move very quickly