Maybe you did not understand, a person who walked around bare legged for their entire life, would still tend to lose leg hair at they age due to the lessening of circulation that occurs as people age. The worse your circulation, the more hair you lose.
Now don't go thinking that you should cut off circulation to gain your hair removal goals, as that would lead to other problems.
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Setting a goal is not the main thing. It is deciding how you will go about achieving it and staying with that plan. --- Tom Landry