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by tftplayer 2524 days ago
Use an asymmetry of the human body. Left is on the same side as your heart.
2 comments
Freak_NL 2524 days ago
Which is again, only most of time (cf: dextrocardia).

Not as common as left-handedness (one in ten), but still in the order of one in ten thousand people.

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pmalynin 2524 days ago
Your heart is squarely in the middle. You feel the heart beat on the left because the ventricle is larger.
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