Morning Mindfulness - Two Positive Minutes To Start Your Day

Most of our body cells are getting replaced on a regular basis. Some cells live several days, others - several years. And some cells, like neurons for example, never replace, as far as I know. I am not going to speculate on scientific topics today.   The question is, if our cells are getting replaced, why are we aging? Our skin is being replaced on regular basis, why is it looking older with age?