It used to be a lot longer. When I first grew my beard many years ago, I let it go almost a year without trimming. It reached about halfway down to my bellybutton. I could actually feel it on my stomach when I went to sleep. However, I trimmed it to about James Garfield level when I started being confused with ZZ Top. The strange thing is that I suffer recurrent nightmares (about 3 or 4 times per year) about losing my beard. This happened again just a few weeks ago. As always, the moment I woke up I grabbed it for reassurance.
Interesting. But, do you sleep “in” or “out” at night. Inquiring minds and all... :)