as far as I know..you don't really ever stop growing hair...unless you're bald. lol Even after you die...your hair and nails grow for a while after.
This is actually a common misperception. When someone dies their skin "shrinks" thus making it appear that their hair and nails have grown some. With out oxygen the stem cells could not keep growing to produce new hair or nails. As far as the general topic I'm only 21 so I'm sure I have a long way to go before I stop having new body hair, it is spreading at a pretty rapid pace as of right now.
actually it does grow a lil after death...off the nutrients left in the body... so we're both right
i didnt start growing body hair till about 7-8 yrs ago and If I do not trim...i'm pretty much a red hair'd yeti. lol I have to keep the back and naughty bits trimmed or it gets a lil outta control... I only trim the chest as low as a 3 guard ...I like the fur