How to count when you’re tired and can’t think straight!

I know there are lots of places where writing on the floor with chalk is common place, but when I see it the only thing I can think of is the poor guy (Austin Gibbs) that has to clean it all up at the end of the day.  If every member at CFC wrote on the floor to keep track of their rounds/reps we would be cleaning ALL NIGHT!  If the lack of oxygen during your workout makes it too difficult to keep track, grab some poker chips or a whiteboard to help you count!