I absolutely don't know if this is true: but my doctor once said that your nose and cavities are having their 'period' every 6 weeks or so, just to clean up. Mo

I absolutely don't know if this is true: but my doctor once said that your nose and cavities are having their 'period' every 6 weeks or so, just to clean up. Most people don't even notice this. But this is when you are most vulnerable to viruses. Maybe someone know if this is true.