Your watch might count your heartbeats like a piggy bank for energy.
It's like a special game to see how hard your heart works.
Fit people's hearts don't beat as fast when they are resting.
This teaches us to play and rest at the right times.
1 day, 9 hours ago
Your watch might count your heartbeats like a piggy bank for energy.
It's like a special game to see how hard your heart works.
Fit people's hearts don't beat as fast when they are resting.
This teaches us to play and rest at the right times.
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