What to do BETWEEN the approaches when you're alone?

I know that to build momentum, you need to approach a lot of people and minimize the the time between each interaction.

But realistically, I can't sustain this non-stop machine gun approaching for a long time.

Some PUAs say that you should focus on taking action even between the approaches - for example like clapping your hands in the club (at the very least), just so you don't get stuck in your head. If you have a buddy with you, awesome - you can just talk with him/her and then keep on sarging.

But what are some other things I can do in between the approaches when ALONE?