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Unless you were born with a significant congenital defect you grew all those muscles well before you were born.
What else can I help you with?
How do frogs grow their arms and legs?
there butts grow
Why do cacti grow arms?
Although some Saguaro cacti never grow arms, those that grow arms do so between the ages of 50 to 100 years. The size of this cacti and the number of arms is due to factors, such as soil and rainfall. Saguaro cacti grow in the Sonoran Desert of the United States.
Why do we grow hair under our arms?
We grow hair under our arms as a natural way for our bodies to regulate temperature and protect the skin in that area.
Can a starfish get 13 arms?
yes. they can grown 13 arms the limt of arm they can grow is 40 arms or legs
Can a octopus grow more than 8 legs?
An octopus naturally has eight arms. However, it is possible for one to lose arms, perhaps by an encounter with a predator, but the arms will grow back.
When does a baby grow arms?
Babies develop arms when they are 7 weeks old in the womb.
Which part of the body does not grow from birth?
the ribs does not grow only your arms and legs
Can you grow extra arms with stem cells?
No
How do starfish grow new arms?
yes
Can people grow 3 arms?
Nope.
What learned behaviors do starfish have?
move with there arms and lose arms and spilt in half but they grow back
What stage of puberty does hair grow under arms for boys?
About 1-2 years after you start puberty, you start to grow hair under your arms and around your genitals.
