this part of why I do regular cleaning and maintenance. When I clean my chain I remove both wheels and the chain and clean the entire bike. when I do that I give a quick tug to the fork, stem, cranks and hubs. On my last cleaning I realized one hub had some play so I adjusted that and checked the grease. I do this fairly regularly and keep a silent, oiled, clean bike. It's safer, silent and that's how I like it.