I usually stamp in the evenings after my kids are in bed. I come alive at night and usually could stamp until morning, but I have to be well rested for my little ones so I try to stop when I get tired. I could stamp through anything though, hunger, tiredness, having to pee, pretty much anything.
Edited to add - I've even stamped through contractions. Not the really bad ones, but through the beginning of labor. It's an addiction.