Why are the fingernails + hair of a person - still growing long after death .??

i see it , in so many movies .Why are the fingernails + hair of a person - still growing long after death .??
No. When u die the skin on ur head and ur fingers dries out so it becomes stiff. Then it shrivels back a little bit so it looks like there hair or nails has grown.Why are the fingernails + hair of a person - still growing long after death .??
That is an old wise tell.





It's simply not true.
its not that your fingernails and hair grows, its that your skin kind of deflates?.. it just looks like its all growing but really its just your skin shrinking
Think it has something to do with the skin shrinking/shrivelling that causes the hair to look longer.