I've stated it many times. In even one day I could lose as many as 100 hairs or more! All terminal hairs though so I'm not very worried about it. The fuller the beard, the more hairs will fall out on a daily basis.

One thing I have to add to this is that it usually happens when I'm exfoliating, which is every (2nd) day. When I'm just standing around maybe a couple of hairs will fall out once every so often.