Cells

Cells are very confusing to me but I will try my best to explain why you cannot feel cellular activity even though you know your cells are alive and functional.  First of all, you know that your cells are working because you are alive.  If your cells weren't working you would not be alive.  Cells are what make up all the organs of your body and if they weren't there then your body would not be able to funcion.  And that is how you can know that your cells are alive and functional.