The Facebook ad that gets the cheapest clicks is the one that is the most relevant to the audience. Just think about it for a minute.
Imagine you seeing a Facebook ad that says " Do You Live In New York City?" Click here! Then you see another ad that says "Do you live on or near Palms St." Click here. Which ad is more relevant?
The address one because you are targeting someone who in fact lives near a particular street. And that is scary relevant! Wow I live actually on that street, how did they know? Not only are you going to get cheap clicks, but you will also get quality ones. Because there is no excuse not to sign up for your program because they are too far, they LITERALLY can walk to your gym!