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Why Do Some Shots Make Your Arm Hurt So Much?

By SciShowFrom boclips.com
989.2K views
40.2K likes

From MMR boosters to tetanus, you'll probably get a lot of shots in your life. And one thing you might notice is that some of them don't feel like much, but some of them can make your arm reallllly sore! Why is that?

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Explainer
Physical Sciences
General Science
Advanced Secondary

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