Sleep boosts immune system 'memory' too
According to a recent study conducted in Germany, a good night's sleep not only strengthens your memory but also strengthens the response-memory of your immune system when it comes to killing bad bacteria and viruses as they enter your body. The immune system “remembers” an encounter with a bacteria or virus by collecting fragments from the bug to create memory T cells, which last for months or years and help the body recognise a previous infection and quickly respond. These memory T cells appear to abstract "gist information" about the pathogens and the selection of “gist information” allows memory T cells to detect new pathogens that are similar, but not identical, to previously encountered bacteria or viruses.

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