Lately it seems that my hands and forearms fall asleep quite often. is that a sign for something serious?

Positional tingling: If you are experiencing intermittent tingling and numbness in your hands and forearms, what it might represent depends on how and when it happens. It is usually not serious but rarely there could be some sort of compressive or circulatory cause that should be evaluated. Describe your symptoms to a practitioner and they can examine for underlying explanations.