I started doing it and it's helped a lot. I'm not talking in the sense of pickup but it just helps to loosen me up for the day. For example, this morning I was getting coffee at Dunkin Donuts and a woman next to me ordered a flavor I had once. After she did that and while we were waiting, I pretended I never had it and just asked her how it was. It lead to a conversation about the coffee. It was nothing serious and it was lighthearted but I felt good. Now I can get it (or pretend to) and tell her my thoughts next time and maybe try to get her number (though it's before work so I'm not sure how well that will go haha).

I highly suggest doing it at least once a day or so. It's probably common sense and not much different than asking for the time, but it feels more genuine to me.