Keep yourself hydrated.Keep popping your fingers as much as you want till you get bored. It's just a question of habit. Think of something productive to do to distract yourself every time you feel like popping your fingers.Just don't give too much thought into that. Because it is not a problem.
Next Steps
Nothing wrong with it . So nothing else to do about it.
Health Tips
Drink lot of water. Keep hydrated during your work outs.