Getting an appropriate amount and quality of sleep has long been known to be important to good health.
In particular, scientists have shown that white blood cells, the cells which defend your body against germs, are strongest in people who get appropriate sleep.
In the latest issue of the journal, Trends in Neurosciences, scientists have gathered together lots of evidence to support that appropriate sleep not only helps your cells to fight germs but it also helps your cells to remember which germs to fight.
And remembering which germs to fight is the key to vaccination.
Let me highlight how this all works.