Cold hands and feet?

I'm 15, 5'8 and 130 (Not sure if that is needed.) I always have cold hands and feet and can never warm them up. Even after jogging, lifting weights they're still cold. However, sometimes they are not, it's very weird. Also, today, the first time this has happened, 1 of my hands is warm while my feet... show more I'm 15, 5'8 and 130 (Not sure if that is needed.) I always have cold hands and feet and can never warm them up. Even after jogging, lifting weights they're still cold. However, sometimes they are not, it's very weird. Also, today, the first time this has happened, 1 of my hands is warm while my feet and other hand are cold.
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