Do muscles grow naturally during puberty?
I'm 16 years old and idk i seem to be growing muscles on my body, i even have an 8 pack like i don't even work out of do sports lol how is this possible?
Yes. Though exercise will encourage them.
Muscle tone depends a lot on genetics. But yes testosterone has a lot to do with muscle tone as well.
This is not good at all! You must see a doctor immediately!!! You could be at risk for ALS!
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